274
FNUS55 KRIW 092009
FWFRIW
FIRE WEATHER PLANNING FORECAST FOR WESTERN AND CENTRAL WYOMING
NATIONAL WEATHER SERVICE RIVERTON WY
209 PM MDT WED SEP 9 2026
DISCUSSION
...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER
ZONES 140...414...415...AND 416)...
DRY AND WARM WEST-NORTHWEST FLOW CONTINUES OVER WESTERN WY TODAY
TO CREATE ELEVATED FIRE WEATHER CONDITIONS. SKIES WILL BE MOSTLY
CLEAR TO PARTLY CLOUDY FOR THE REST OF TODAY, BEFORE BECOMING
MOSTLY CLEAR THROUGH THU SUNRISE. WIND GUSTS OF 15-25 MPH IN THE
HIGHER ELEVATIONS WILL DECREASE OVERNIGHT, BUT INCREASE AGAIN
BEFORE NOON THU. WHILE SOME HIGH CLOUDS WILL MOVE INTO WESTERN WY
STARTING THU MORNING, DRY NEAR-SURFACE AIR AND SLIGHTLY STRONGER
WINDS OF 20-30 MPH WILL KEEP ELEVATED FIRE WEATHER CONDITIONS
THROUGH THE DAY ON THURSDAY. ZONES 414 AND 416 MAY SEE SOME LIGHT
SHOWERS BEFORE MIDNIGHT THURSDAY NIGHT DUE TO A DISTURBANCE FROM
THE GREAT BASIN.
..CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276
282...283...285...286...287...288...AND 289)...
***RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY FOR
ZONES 286...287...AND 288***
WARM, DRY, AND WINDY CONDITIONS CONTINUE TODAY FOR ELEVATED FIRE
WEATHER CONDITIONS. SKIES WILL BE MOSTLY CLEAR OVERNIGHT WITH FAIR
TO POOR HUMIDITY RECOVERY IN MANY AREAS. MOSTLY CLEAR SKIES
THURSDAY WILL GIVE WAY TO WARMER, DRIER, AND WINDIER CONDITIONS
DURING THE AFTERNOON AND EARLY EVENING. CONDITIONS NOW APPEAR TO
BE IN THE CRITICAL RANGE FOR PORTIONS OF THE WIND RIVERS,
ABSAROKAS, AND OWL CREEKS AS WIND GUSTS OF 25 TO 35 MPH SHOULD
DEVELOP ALONG THE EASTERN SLOPES. THE REST OF THE DISPATCH AREA
WILL SEE ELEVATED FIRE WEATHER CONDITIONS WITH WIND GUSTS OF 15 TO
25 MPH. HIGH CLOUDS WILL MOVE OVER THE AREA THU AFTERNOON AND
INCREASE THU EVENING.
..CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278
279...280...281...285...289...AND 300)...
***RED FLAG WARNING IN EFFECT FOR ZONES 277, 278, 279, 280, 289
AND 300 UNTIL 9 PM MDT THURSDAY***
CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE FOR MOST OF THE
DISPATCH AREA FROM TODAY THROUGH EARLY THURSDAY EVENING. WHILE
WINDS AND TEMPERATURES WILL DECREASE OVERNIGHT, HUMIDITIES WILL
ONLY SOMEWHAT INCREASE BUT SHOULD REMAIN BELOW ABOUT 50 PERCENT,
FOR FAIR TO POOR RECOVERY. THURSDAY WILL BE A FEW DEGREES WARMER,
SLIGHTLY DRIER, AND SLIGHTLY WINDIER. HIGH CLOUDS WILL MOVE IN
FROM THE WEST STARTING THU MORNING OVER SW WY, AND THEN IN THE
AFTERNOON OVER CENTRAL WY. SW WY COULD SEE SOME LIGHT SHOWERS
BEFORE MIDNIGHT THU NIGHT DUE TO A WEAK DISTURBANCE FROM THE GREAT
BASIN.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
WYZ280-102215-
NATRONA COUNTY/CASPER BLM-
INCLUDING THE CITIES OF CASPER AND MIDWEST
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....75-80.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........7-13 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......7800-8800 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........39-45 PERCENT.
24 HR TREND......28 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN WEST.
MIXING HEIGHT.......3000-5000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....80-85.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........4-10 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH UNTIL 1200, THEN
WEST AROUND 20 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 5400-7400 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....54-59.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........31-37 PERCENT.
24 HR TREND......12 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....77-82.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS 15 TO 20 MPH UNTIL
1200, THEN WEST 20 TO 25 MPH. GUSTS UP TO 40
MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 1200, THEN 8200-10200 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
COOLER. PARTLY CLOUDY. LOWS IN THE MID 40S.
NORTHEAST WINDS AROUND 15 MPH.
SATURDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.
EAST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S. WEST
WINDS AROUND 20 MPH.
MONDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 70.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S.
WEDNESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S.
WYZ283-102215-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-
INCLUDING THE CITIES OF CROWHEART, LANDER, RIVERTON, AND SHOSHONI
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........11-17 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......7400-9400 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........36-42 PERCENT.
24 HR TREND......12 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 30 MPH
UNTIL 2400, THEN 20 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......3800-5800 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....78-83.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........10-16 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH
UNTIL 1200, THEN 30 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........41-47 PERCENT.
24 HR TREND......UNCHANGED.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 30 MPH
UNTIL 2400, THEN 20 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......3000-5000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....75-80.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........20-26 PERCENT.
24 HR TREND......9 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH UNTIL 1500, THEN AROUND
20 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 1200, THEN AROUND 25
MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 8400-10400 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 70S. NORTHEAST WINDS AROUND 10 MPH.
SUNDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.
WEST WINDS AROUND 15 MPH.
MONDAY
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE MID 70S.
WYZ285-102215-
SOUTH BIGHORN MOUNTAINS-
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........12-18 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 30 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5800-7000 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........34-40 PERCENT.
24 HR TREND......19 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 0300, THEN
SOUTHWEST AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN WEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTHWEST.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR.
THURSDAY
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........8-14 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 4200-6200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....52-57.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........28-34 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........21-27 PERCENT.
24 HR TREND......11 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
COLDER. PARTLY CLOUDY. LOWS IN THE MID 40S.
NORTHEAST WINDS AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S. EAST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.
WEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 60.
NORTHWEST WINDS AROUND 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE UPPER 60S.
WYZ281-102215-
JOHNSON COUNTY/CASPER BLM-
INCLUDING THE CITIES OF BUFFALO AND KAYCEE
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........14-20 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
MIXING HEIGHT.......7000-8400 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........50-56 PERCENT.
24 HR TREND......22 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH UNTIL 0300, THEN SOUTHWEST AROUND 10
MPH WITH GUSTS TO AROUND 15 MPH.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTHWEST.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 400 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....79-84.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........10-16 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......SOUTH WINDS 10 TO 15 MPH UNTIL 1500, THEN WEST.
GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....53-58.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........40-46 PERCENT.
24 HR TREND......11 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......9 DEGREES COOLER.
MIN HUMIDITY........26-32 PERCENT.
24 HR TREND......19 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH UNTIL 1200, THEN
NORTHWEST 15 TO 20 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 1200, THEN NORTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 1200, THEN NORTHWEST
AROUND 25 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN VERY GOOD.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S.
NORTHWEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE MID 70S.
WYZ282-102215-
SOUTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF TEN SLEEP, THERMOPOLIS, AND WORLAND
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......UNCHANGED.
MIN HUMIDITY........12-18 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....NORTHEAST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
MIXING HEIGHT.......5800-6800 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........40-46 PERCENT.
24 HR TREND......9 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15
MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTHWEST.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....77-82.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........8-14 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN SOUTH
AROUND 10 MPH UNTIL 1500, THEN NORTH. GUSTS UP
TO 15 MPH.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 4800-6800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....49-54.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........33-39 PERCENT.
24 HR TREND......6 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
SOUTHWEST. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......5 DEGREES COOLER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......10 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH UNTIL 1200, THEN
NORTHWEST. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN
NORTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD TO
EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. NORTH WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.
NORTHWEST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE MID 70S.
WYZ275-102215-
NORTH BIGHORN BASIN/WORLAND BLM-
INCLUDING THE CITIES OF GREYBULL, LOVELL, AND POWELL
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........15-21 PERCENT.
24 HR TREND......3 PERCENT WETTER.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....NORTH AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
MIXING HEIGHT.......6000-7200 FT AGL.
SMOKE DISPERSAL.....GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........44-50 PERCENT.
24 HR TREND......11 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 0300, THEN
SOUTH AROUND 10 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....73-78.
24 HR TREND......7 DEGREES WARMER.
MIN HUMIDITY........10-16 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......SOUTH WINDS AROUND 10 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....SOUTH AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH UNTIL 1200, THEN SOUTHWEST.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 4800-6800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....48-53.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........40-46 PERCENT.
24 HR TREND......4 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH AND GUSTY.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......8 DEGREES COOLER.
MIN HUMIDITY........25-31 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH WITH HIGHER GUSTS
UNTIL 0900, THEN NORTHWEST WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 1200, THEN NORTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN
NORTHWEST.
MIXING HEIGHT.......1400-3400 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS AROUND 15 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 41 TO 46. HIGHS AROUND
70. NORTHWEST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S.
WEDNESDAY
PARTLY CLOUDY. HIGHS IN THE LOWER 70S.
WYZ276-102215-
CODY FOOTHILLS-
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........16-22 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 15 MPH WITH GUSTS TO
AROUND 30 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......8000-9600 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....49-54.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........35-41 PERCENT.
24 HR TREND......16 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH UNTIL 2400, THEN
SOUTHWEST. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......3000-5000 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....78-83.
24 HR TREND......6 DEGREES WARMER.
MIN HUMIDITY........12-18 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1200, THEN 5600-7600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....51-56.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........43-49 PERCENT.
24 HR TREND......6 PERCENT WETTER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30
MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......9 DEGREES COOLER.
MIN HUMIDITY........29-35 PERCENT.
24 HR TREND......19 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH UNTIL 1200, THEN NORTH
15 TO 20 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....NORTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN VERY GOOD TO
EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS AROUND 10 MPH.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 41 TO 46. HIGHS IN THE
MID 60S. NORTHWEST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER
60S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
60S.
WEDNESDAY
PARTLY CLOUDY. HIGHS IN THE UPPER 60S.
WYZ287-102215-
OWL CREEK MOUNTAINS-
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........10-16 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......NORTHEAST WINDS AROUND 15 MPH WITH HIGHER
GUSTS.
RIDGE TOP WINDS.....NORTHEAST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......7400-9200 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........30-36 PERCENT.
24 HR TREND......14 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2400, THEN
SOUTHWEST. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2400, THEN
SOUTHWEST.
MIXING HEIGHT.......3000-5000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....74-79.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........8-14 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 20
MPH UNTIL 1200, THEN 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 5200-7200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....51-56.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........31-37 PERCENT.
24 HR TREND......1 PERCENT WETTER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH. GUSTS UP TO 35 MPH
UNTIL 2400, THEN 25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600-1000 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......9 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 1200, THEN 8600-10600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S. NORTHEAST WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 60S. WEST WINDS
AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER
60S. NORTH WINDS AROUND 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S.
HIGHS IN THE UPPER 60S.
WYZ286-102215-
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
INCLUDING THE CITY OF PAHASKA
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........18-24 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND
35 MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
MIXING HEIGHT.......6800-8000 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....40-45.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........52-58 PERCENT.
24 HR TREND......9 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30
MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........15-21 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 4000-6000 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........53-59 PERCENT.
24 HR TREND......5 PERCENT WETTER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF
PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....61-66.
24 HR TREND......4 DEGREES COOLER.
MIN HUMIDITY........31-37 PERCENT.
24 HR TREND......8 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 45
MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40. SOUTHWEST WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
SOUTH WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE
LOWER 50S. WEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE LOWER
50S. WEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER 50S.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 60.
WYZ140-102215-
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......5 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
MIXING HEIGHT.......6000-7200 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....35-40.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........69-75 PERCENT.
24 HR TREND......9 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 20
MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........20-26 PERCENT.
24 HR TREND......3 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN
SOUTHWEST 10 TO 15 MPH. GUSTS UP TO 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN AROUND
25 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 3600-5600 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....38-43.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........68-74 PERCENT.
24 HR TREND......2 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........28-34 PERCENT.
24 HR TREND......4 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH UNTIL 1200, THEN WEST
AROUND 30 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. SOUTH
WINDS AROUND 10 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. SHOWERS, SNOW SHOWERS LIKELY AND
SLIGHT CHANCE OF THUNDERSTORMS. LOWS AROUND 30. HIGHS AROUND 50.
SOUTHWEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS AROUND 30. HIGHS IN THE LOWER 50S.
WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
50S.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 60S.
WYZ415-102215-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
INCLUDING THE CITIES OF JACKSON AND MORAN
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....62-67.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........20-26 PERCENT.
24 HR TREND......4 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5400-6400 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....34-39.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........66-72 PERCENT.
24 HR TREND......9 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH AND GUSTY UNTIL 2100,
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........19-25 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN
SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 4200-6200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....39-44.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........71-77 PERCENT.
24 HR TREND......6 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
SLIGHT CHANCE OF SHOWERS IN THE MORNING. CHANCE
OF SHOWERS 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........27-33 PERCENT.
24 HR TREND......5 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 30 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 6800-8800 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 40S. SOUTH WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.
SOUTH WINDS AROUND 10 MPH.
SUNDAY
COOLER. PARTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS AROUND 30. HIGHS
IN THE LOWER 50S. SOUTHWEST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE MID
50S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 60S.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 60S.
WYZ416-102215-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....61-66.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........12-18 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5600-6400 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....32-37.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........50-56 PERCENT.
24 HR TREND......5 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2100, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....64-69.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........14-20 PERCENT.
24 HR TREND......1 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 3800-5800 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....39-44.
24 HR TREND......5 DEGREES WARMER.
MAX HUMIDITY........62-68 PERCENT.
24 HR TREND......16 PERCENT WETTER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 30 MPH
UNTIL 2400, THEN 20 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS THROUGH
THE DAY. CHANCE OF SHOWERS 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....60-65.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........30-36 PERCENT.
24 HR TREND......11 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH UNTIL 1200, THEN
WEST AROUND 20 MPH. GUSTS UP TO 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 30 MPH.
MIXING HEIGHT.......1600-3600 FT AGL UNTIL 1200, THEN 5800-7800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD TO
EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS AROUND 40. SOUTHWEST WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.
SOUTH WINDS AROUND 15 MPH.
SUNDAY
COOLER. PARTLY CLOUDY WITH CHANCE OF SHOWERS, SNOW
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER
20S. HIGHS IN THE LOWER 50S. WEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER
50S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S.
WEDNESDAY
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE UPPER 50S.
WYZ288-102215-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
INCLUDING THE CITIES OF DUBOIS AND SOUTH PASS
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........13-19 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND
35 MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
MIXING HEIGHT.......6400-7600 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....40-45.
24 HR TREND......4 DEGREES WARMER.
MAX HUMIDITY........38-44 PERCENT.
24 HR TREND......7 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....68-73.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........11-17 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 3600-5600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN GOOD TO VERY
GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........46-52 PERCENT.
24 HR TREND......12 PERCENT WETTER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
SLIGHT CHANCE OF SHOWERS IN THE MORNING. CHANCE
OF SHOWERS 20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
24 HR TREND......3 DEGREES COOLER.
MIN HUMIDITY........29-35 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. WEST WINDS 20 TO 25 MPH WITH GUSTS TO
AROUND 45 MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 1200, THEN 6800-8800 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 60S.
SOUTHWEST WINDS AROUND 10 MPH.
SUNDAY
MOSTLY CLEAR WITH CHANCE OF SHOWERS, SNOW SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE
UPPER 50S. WEST WINDS AROUND 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER
50S. WEST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS IN THE
LOWER 40S. HIGHS IN THE LOWER 60S.
WEDNESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 60S.
WYZ414-102215-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
INCLUDING THE CITY OF AFTON
209 PM MDT WED SEP 9 2026
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........13-19 PERCENT.
24 HR TREND......7 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......5600-6200 FT AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....33-38.
24 HR TREND......3 DEGREES WARMER.
MAX HUMIDITY........66-72 PERCENT.
24 HR TREND......2 PERCENT WETTER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS TO AROUND
25 MPH UNTIL 2400, THEN DOWNSLOPE/DOWNVALLEY
4-7 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2000-4000 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....66-71.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........17-23 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 4200-6200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....40-45.
24 HR TREND......6 DEGREES WARMER.
MAX HUMIDITY........72-78 PERCENT.
24 HR TREND......13 PERCENT WETTER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
SLIGHT CHANCE OF SHOWERS THROUGH THE DAY.
SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. CHANCE OF PRECIPITATION 20 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....63-68.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........26-32 PERCENT.
24 HR TREND......10 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH UNTIL 1500, THEN
WEST. GUSTS UP TO 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......1800-3800 FT AGL UNTIL 1200, THEN 6600-8600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS AROUND 40. HIGHS AROUND 70.
SOUTHWEST WINDS AROUND 15 MPH.
SUNDAY
COOLER. PARTLY CLOUDY WITH CHANCE OF SHOWERS, SLIGHT
CHANCE OF THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE LOWER 30S.
HIGHS IN THE MID 50S. WEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
50S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
HIGHS IN THE MID 60S.
WYZ278-102215-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
INCLUDING THE CITIES OF BIG PINEY, FARSON, AND PINEDALE
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......1 DEGREE WARMER.
MIN HUMIDITY........11-17 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......7200-8400 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....35-40.
24 HR TREND......UNCHANGED.
MAX HUMIDITY........54-60 PERCENT.
24 HR TREND......5 PERCENT WETTER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......3000-5000 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........13-19 PERCENT.
24 HR TREND......2 PERCENT WETTER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 1200, THEN WEST
AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....42-47.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........61-67 PERCENT.
24 HR TREND......1 PERCENT DRIER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30
MPH UNTIL 2400, THEN DOWNSLOPE/DOWNVALLEY 4-7
MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 2400, THEN 400-800 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........22-28 PERCENT.
24 HR TREND......10 PERCENT WETTER.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH UNTIL 1200, THEN AROUND
20 MPH. GUSTS UP TO 35 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 1200, THEN AROUND 25
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 1200, THEN AROUND 25
MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 7400-9400 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. SOUTHWEST WINDS AROUND 15 MPH.
SUNDAY
COOLER. MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 60S.
WEST WINDS AROUND 15 MPH.
MONDAY
CLEAR. LOWS IN THE MID 30S. HIGHS IN THE MID 60S. WINDS
GENERALLY LESS THAN 10 MPH.
TUESDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS AROUND
40. HIGHS AROUND 70.
WEDNESDAY
MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 70.
WYZ277-102215-
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
INCLUDING THE CITIES OF EVANSTON, FORT BRIDGER, AND KEMMERER
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........11-17 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......6600-7600 FT AGL.
SMOKE DISPERSAL.....VERY GOOD.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....35-40.
24 HR TREND......2 DEGREES COOLER.
MAX HUMIDITY........59-65 PERCENT.
24 HR TREND......3 PERCENT WETTER.
HUMIDITY RECOVERY...GOOD.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 25 MPH UNTIL 2400, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........12-18 PERCENT.
24 HR TREND......UNCHANGED.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN WEST
10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 1200, THEN AROUND 20
MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 5000-7000 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD TO VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....45-50.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........54-60 PERCENT.
24 HR TREND......1 PERCENT WETTER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 30
MPH UNTIL 2400, THEN 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....69-74.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........24-30 PERCENT.
24 HR TREND......12 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH UNTIL 1200, THEN
WEST AROUND 20 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 40S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S.
SOUTHWEST WINDS AROUND 15 MPH.
SUNDAY THROUGH MONDAY
MOSTLY CLEAR. LOWS 33 TO 38. HIGHS 62 TO
67. WEST WINDS 10 TO 15 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S.
HIGHS IN THE LOWER 70S.
WYZ279-102215-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
INCLUDING THE CITIES OF GREEN RIVER, ROCK SPRINGS, AND WAMSUTTER
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........14-20 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......7200-8400 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....42-47.
24 HR TREND......2 DEGREES COOLER.
MAX HUMIDITY........45-51 PERCENT.
24 HR TREND......3 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH
UNTIL 2400, THEN 15 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......3400-5400 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......2 DEGREES WARMER.
MIN HUMIDITY........13-19 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900. WINDS WEST
AROUND 20 MPH AFTER 1500. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 5200-7200 FT
AGL.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....49-54.
24 HR TREND......7 DEGREES WARMER.
MAX HUMIDITY........48-54 PERCENT.
24 HR TREND......1 PERCENT DRIER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 30
MPH UNTIL 2400, THEN 15 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
MIXING HEIGHT.......3200-5200 FT AGL UNTIL 2400, THEN 600-800 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE
IN THE AFTERNOON. CHANCE OF PRECIPITATION 20
PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........34-40 PERCENT.
24 HR TREND......16 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH UNTIL 1200, THEN
WEST AROUND 20 MPH. GUSTS UP TO 35 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
MIXING HEIGHT.......2200-4200 FT AGL UNTIL 1200, THEN 7600-9600 FT
AGL.
SMOKE DISPERSAL.....FAIR TO GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
SATURDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.
SOUTH WINDS AROUND 15 MPH.
SUNDAY
COOLER. MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS IN
THE UPPER 30S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE
MID 70S.
WYZ289-102215-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
INCLUDING THE CITY OF JEFFREY CITY
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....70-75.
24 HR TREND......1 DEGREE COOLER.
MIN HUMIDITY........6-12 PERCENT.
24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND
35 MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
MIXING HEIGHT.......7200-8800 FT AGL.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....43-48.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........35-41 PERCENT.
24 HR TREND......16 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 30 MPH
UNTIL 2400, THEN 15 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
MIXING HEIGHT.......3600-5600 FT AGL UNTIL 2400, THEN 400-600 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....73-78.
24 HR TREND......3 DEGREES WARMER.
MIN HUMIDITY........7-13 PERCENT.
24 HR TREND......1 PERCENT DRIER.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS 10 TO 15 MPH UNTIL
1200, THEN WEST 20 TO 25 MPH. GUSTS UP TO 35
MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
MIXING HEIGHT.......800-2800 FT AGL UNTIL 1200, THEN 4600-6600 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....50-55.
24 HR TREND......7 DEGREES WARMER.
MAX HUMIDITY........39-45 PERCENT.
24 HR TREND......2 PERCENT WETTER.
HUMIDITY RECOVERY...MODERATE.
20-FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH. GUSTS UP TO 35
MPH UNTIL 2400, THEN 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........20-26 PERCENT.
24 HR TREND......13 PERCENT WETTER.
20-FOOT WINDS.......BREEZY. SOUTHWEST WINDS 15 TO 20 MPH UNTIL
1200, THEN WEST AROUND 25 MPH. GUSTS UP TO 45
MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 20 MPH UNTIL 1200, THEN WEST
AROUND 30 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH UNTIL 1200, THEN WEST
AROUND 30 MPH.
MIXING HEIGHT.......2600-4600 FT AGL UNTIL 1200, THEN 8000-10000 FT
AGL.
SMOKE DISPERSAL.....GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE UPPER 70S. SOUTH
WINDS AROUND 10 MPH.
SUNDAY
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS IN THE
UPPER 30S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND 20 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID
60S. WEST WINDS AROUND 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE
LOWER 70S.
WYZ300-102215-
CASPER MOUNTAIN-
209 PM MDT WED SEP 9 2026
..RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THURSDAY
THIS AFTERNOON
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....71-76.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........8-14 PERCENT.
24 HR TREND......5 PERCENT DRIER.
20-FOOT WINDS.......WEST WINDS AROUND 15 MPH WITH GUSTS TO AROUND
25 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
MIXING HEIGHT.......7600-8800 FT AGL.
SMOKE DISPERSAL.....EXCELLENT.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....44-49.
24 HR TREND......2 DEGREES WARMER.
MAX HUMIDITY........30-36 PERCENT.
24 HR TREND......27 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 0300, THEN
SOUTH AROUND 10 MPH. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH UNTIL 2400, THEN SOUTH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2400, THEN SOUTH.
MIXING HEIGHT.......3400-5400 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
THURSDAY
SKY/WEATHER.........SUNNY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....75-80.
24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........6-12 PERCENT.
24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH UNTIL 1200, THEN
WEST AROUND 20 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH UNTIL 1200, THEN WEST
AROUND 25 MPH.
MIXING HEIGHT.......1000-3000 FT AGL UNTIL 1200, THEN 4800-6800 FT
AGL.
SMOKE DISPERSAL.....POOR TO FAIR UNTIL 1200, THEN VERY GOOD.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....51-56.
24 HR TREND......8 DEGREES WARMER.
MAX HUMIDITY........30-36 PERCENT.
24 HR TREND......2 PERCENT DRIER.
HUMIDITY RECOVERY...POOR.
20-FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH UNTIL 2400, THEN
AROUND 10 MPH. GUSTS UP TO 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
MIXING HEIGHT.......2400-4400 FT AGL UNTIL 2400, THEN 600 FT AGL.
SMOKE DISPERSAL.....GOOD UNTIL 2400, THEN POOR.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....72-77.
24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........23-29 PERCENT.
24 HR TREND......14 PERCENT WETTER.
20-FOOT WINDS.......SOUTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 40 MPH.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH UNTIL 1200, THEN WEST
AROUND 30 MPH.
MIXING HEIGHT.......2800-4800 FT AGL UNTIL 1200, THEN 8800-10000 FT
AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD UNTIL 1200, THEN EXCELLENT.
FORECAST DAYS 3 THROUGH 7...
FRIDAY NIGHT
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. SOUTH WINDS AROUND 10 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.
WEST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID
60S. SOUTHWEST WINDS AROUND 10 MPH.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLEAR WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE
LOWER 70S.
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