981  
FNUS55 KRIW 221153  
FWFRIW  
 
FIRE WEATHER PLANNING FORECAST FOR WESTERN AND CENTRAL WYOMING  
NATIONAL WEATHER SERVICE RIVERTON WY  
553 AM MDT THU OCT 22 2020  
   
DISCUSSION
 
 
...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER  
ZONES 140...414...415...AND 416)...  
 
THE COLD FRONT HAS PASSED THROUGH THE REGION, WITH LIGHT SNOW FROM  
JACKSON NORTHWARD. SNOW WILL COME TO AN END LATER THIS MORNING.  
WINDS WILL BE LIGHT FROM THE NORTH THROUGH THE DAY, GENERALLY LESS  
THAN 10 MPH. TEMPERATURES WILL FALL INTO THE TEENS FOR THE LOWER  
ELEVATIONS AND 5 TO 10 DEGREE FOR HIGHER ELEVATIONS. LIGHT SOUTH  
WINDS RETURN FRIDAY, BRINGING TEMPERATURES BACK INTO THE 30S AND  
LOWER 40S. ANOTHER ROUND OF SNOWFALL RETURN SATURDAY, WITH MUCH  
COLDER TEMPERATURES LATER IN THE WEEKEND.  
   
..CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276
 
 
282...283...285...286...287...288...AND 289)...  
 
THE COLD FRONT HAS PASSED THROUGH THE REGION, WITH SNOWFALL  
GRADUALLY DECREASING THROUGH THE MORNING. BREEZY NORTH WINDS ARE  
EXPECTED FOR THE LOWER BASINS THIS MORNING BEFORE GRADUALLY  
DECREASING IN THE AFTERNOON. TEMPERATURES WILL FALL INTO THE  
TEENS OVERNIGHT, WITH HIGHER ELEVATIONS FALLING TO NEAR 5  
DEGREES. LIGHT SOUTH WINDS RETURN FRIDAY, WITH TEMPERATURES  
REBOUNDING INTO THE MID TO UPPER 30S. ANOTHER ROUND OF SNOWFALL IS  
EXPECTED SATURDAY, WITH MUCH COLDER TEMPERATURES LATER IN THE  
WEEKEND.  
   
..CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278
 
 
279...280...281...285...289...AND 300)...  
 
THE COLD FRONT CONTINUES ACROSS THE STATE, AND SHOULD BE THROUGH  
SOUTH WY BY NOON. SNOWFALL WILL BE LIMITED TO 280 AND 281 TODAY,  
WITH BLOWING SNOW CONTINUING INTO THE AFTERNOON. TEMPERATURES  
FALL INTO THE TEENS OVERNIGHT. SOUTHERLY WINDS RETURN FRIDAY,  
HELPING TEMPERATURES RECOVER INTO THE UPPER 30S AND LOWER 40S.  
ANOTHER ROUND OF SNOWFALL RETURNS SATURDAY, WITH MUCH COLDER  
TEMPERATURES LATER IN THE WEEKEND.  
   
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
 
   
..HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT
 
 
WYZ280-222345-  
NATRONA COUNTY/CASPER BLM-  
INCLUDING THE CITIES OF CASPER AND MIDWEST  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS THROUGH THE DAY.  
PATCHY BLOWING SNOW LATE IN THE MORNING. SNOW  
ACCUMULATION OF 1 TO 0 INCHES. CHANCE OF SNOW  
90 PERCENT.  
MAX TEMPERATURE.....25-30.  
24 HR TREND......36 DEGREES COOLER.  
MIN HUMIDITY........69-75 PERCENT.  
24 HR TREND......49 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS AROUND 15 MPH WITH GUSTS TO AROUND  
25 MPH.  
RIDGE TOP WINDS.....NORTH AROUND 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.70 PERCENT UNTIL 1200, THEN 15 PERCENT.  
TRANSPORT WINDS.....NORTH 20 TO 25 MPH.  
MIXING HEIGHT.......1400-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SNOW SHOWERS EARLY IN THE EVENING.  
ISOLATED SNOW SHOWERS LATE IN THE EVENING.  
CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....10-15.  
24 HR TREND......11 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH WITH GUSTS TO  
AROUND 15 MPH UNTIL 2400, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....EAST 10 TO 15 MPH UNTIL 0300, THEN SOUTH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH UNTIL 2400, THEN AROUND  
10 MPH UNTIL 0300, THEN SOUTHWEST.  
MIXING HEIGHT.......600-1800 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY CLOUDY THEN BECOMING PARTLY  
CLOUDY.  
MAX TEMPERATURE.....34-39.  
24 HR TREND......9 DEGREES WARMER.  
MIN HUMIDITY........40-46 PERCENT.  
24 HR TREND......32 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN SOUTH  
AROUND 10 MPH. GUSTS UP TO 15 MPH.  
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......400-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. LOWS IN THE MID 20S.  
SOUTH WINDS AROUND 10 MPH.    
SATURDAY
 
SNOW SHOWERS AND NUMEROUS SHOWERS. PATCHY BLOWING  
SNOW IN THE EVENING. LOWS AROUND 5. HIGHS IN THE UPPER 30S. NORTH  
WINDS AROUND 15 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS AROUND 3 BELOW. HIGHS AROUND 11. NORTH WINDS AROUND 10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR WITH ISOLATED SNOW SHOWERS.  
LOWS AROUND 7. HIGHS IN THE LOWER 20S. SOUTHWEST WINDS AROUND  
10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS AROUND 19. HIGHS IN  
THE MID 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 40S.  
 

 
 
WYZ283-222345-  
UPPER WIND RIVER BASIN/WIND RIVER BASIN-  
INCLUDING THE CITIES OF CROWHEART, LANDER, RIVERTON, AND SHOSHONI  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS IN THE MORNING.  
NUMEROUS SNOW SHOWERS IN THE AFTERNOON. LITTLE  
OR NO SNOW ACCUMULATION. CHANCE OF SNOW NEAR  
100 PERCENT.  
MAX TEMPERATURE.....24-29.  
24 HR TREND......37 DEGREES COOLER.  
MIN HUMIDITY........54-60 PERCENT.  
24 HR TREND......30 PERCENT WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 15 TO 20 MPH WITH GUSTS TO  
AROUND 25 MPH.  
RIDGE TOP WINDS.....NORTHEAST 20 TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.30 PERCENT UNTIL 1200, THEN 5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 20 TO 25 MPH.  
MIXING HEIGHT.......1600-2800 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SNOW SHOWERS EARLY IN THE EVENING.  
CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....11-16.  
24 HR TREND......10 DEGREES COOLER.  
MAX HUMIDITY........80-86 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH WITH GUSTS TO  
AROUND 15 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....EAST 10 TO 15 MPH UNTIL 2400, THEN SOUTH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH UNTIL 0300, THEN SOUTH.  
MIXING HEIGHT.......400-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY SUNNY THEN BECOMING PARTLY  
CLOUDY.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......8 DEGREES WARMER.  
MIN HUMIDITY........33-39 PERCENT.  
24 HR TREND......17 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. 10 MPH AFTER 1200.  
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
MIXING HEIGHT.......400-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. PARTLY CLOUDY. SCATTERED SNOW  
SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 20S. SOUTHWEST WINDS  
AROUND 10 MPH.    
SATURDAY
 
SNOW SHOWERS. LOWS AROUND 5. HIGHS IN THE UPPER 30S.  
NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS AROUND 2 BELOW. HIGHS AROUND 15. NORTH WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 7. HIGHS IN THE MID 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS AROUND 19. HIGHS IN  
THE UPPER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 40S.  
 

 
 
WYZ285-222345-  
SOUTH BIGHORN MOUNTAINS-  
553 AM MDT THU OCT 22 2020  
 
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS  
EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS UNTIL LATE  
AFTERNOON. NUMEROUS SNOW SHOWERS EARLY IN THE  
AFTERNOON. SCATTERED SNOW SHOWERS LATE IN THE  
AFTERNOON. PATCHY BLOWING SNOW UNTIL LATE  
AFTERNOON. SNOW ACCUMULATION OF 1 TO 0 INCHES.  
CHANCE OF SNOW NEAR 100 PERCENT.  
MAX TEMPERATURE.....18-23.  
24 HR TREND......33 DEGREES COOLER.  
MIN HUMIDITY........69-75 PERCENT.  
24 HR TREND......38 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST WINDS 15 TO 20 MPH WITH GUSTS TO  
AROUND 25 MPH UNTIL 1500, THEN NORTH AROUND 10  
MPH AND GUSTY.  
RIDGE TOP WINDS.....NORTHWEST 20 TO 25 MPH UNTIL 1500, THEN NORTH  
AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.85 PERCENT UNTIL 1200, THEN 20 PERCENT.  
TRANSPORT WINDS.....NORTHWEST 20 TO 25 MPH UNTIL 1500, THEN AROUND  
15 MPH.  
MIXING HEIGHT.......1400-2400 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SNOW SHOWERS EARLY IN THE EVENING.  
ISOLATED SNOW SHOWERS LATE IN THE EVENING.  
CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....5-10.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........83-89 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 0300, THEN  
SOUTHWEST AROUND 10 MPH.  
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH UNTIL 2400, THEN SOUTHWEST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2100, THEN NORTHEAST  
UNTIL 2400, THEN SOUTH.  
MIXING HEIGHT.......400-1600 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....27-32.  
24 HR TREND......10 DEGREES WARMER.  
MIN HUMIDITY........42-48 PERCENT.  
24 HR TREND......34 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH WINDS AROUND 10 MPH.  
RIDGE TOP WINDS.....SOUTH AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......400-1800 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS  
AFTER MIDNIGHT. LOWS IN THE LOWER 20S. SOUTHWEST WINDS AROUND  
10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 3. HIGHS IN THE UPPER 20S. NORTHWEST  
WINDS AROUND 10 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS AROUND 4 BELOW. HIGHS AROUND 7. NORTH WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 6. HIGHS AROUND 16. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 19. HIGHS  
AROUND 30.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE UPPER 30S.  
 

 
 
WYZ281-222345-  
JOHNSON COUNTY/CASPER BLM-  
INCLUDING THE CITIES OF BUFFALO AND KAYCEE  
553 AM MDT THU OCT 22 2020  
 
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS  
EVENING...  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. PATCHY BLOWING SNOW UNTIL LATE  
AFTERNOON. SNOW SHOWERS IN THE MORNING.  
NUMEROUS SNOW SHOWERS LATE IN THE MORNING, THEN  
SCATTERED SNOW SHOWERS LATE IN THE AFTERNOON.  
SNOW ACCUMULATION OF 1 TO 0 INCHES. CHANCE OF  
SNOW 90 PERCENT.  
MAX TEMPERATURE.....21-26.  
24 HR TREND......24 DEGREES COOLER.  
MIN HUMIDITY........74-80 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......BREEZY. NORTH WINDS 20 TO 25 MPH WITH GUSTS TO  
AROUND 40 MPH.  
RIDGE TOP WINDS.....NORTH 25 TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.60 PERCENT UNTIL 1200, THEN 10 PERCENT.  
TRANSPORT WINDS.....NORTH 30 TO 35 MPH.  
MIXING HEIGHT.......1600-2400 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
SCATTERED SNOW SHOWERS EARLY IN THE EVENING.  
ISOLATED SNOW SHOWERS LATE IN THE EVENING.  
CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....9-14.  
24 HR TREND......9 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH WINDS AROUND 15 MPH AND GUSTY UNTIL 2100,  
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH UNTIL 2400, THEN SOUTH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 25 MPH UNTIL 2100, THEN AROUND 15  
MPH UNTIL 2400, THEN SOUTH.  
MIXING HEIGHT.......600-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....29-34.  
24 HR TREND......10 DEGREES WARMER.  
MIN HUMIDITY........50-56 PERCENT.  
24 HR TREND......19 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN SOUTH  
AROUND 10 MPH. GUSTS UP TO 15 MPH.  
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
MIXING HEIGHT.......400-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS  
AFTER MIDNIGHT. LOWS IN THE LOWER 20S. WINDS GENERALLY LESS THAN  
10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 7. HIGHS IN THE UPPER 20S. NORTH WINDS  
AROUND 10 MPH.    
SUNDAY
 
COLDER. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
AROUND 2 BELOW. HIGHS AROUND 13. NORTH WINDS AROUND 10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 8. HIGHS IN THE  
MID 20S. SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS IN THE LOWER 20S.  
HIGHS IN THE UPPER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 40S.  
 

 
 
WYZ282-222345-  
SOUTH BIG HORN BASIN/WORLAND BLM-  
INCLUDING THE CITIES OF TEN SLEEP, THERMOPOLIS, AND WORLAND  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS IN THE MORNING.  
NUMEROUS SNOW SHOWERS IN THE AFTERNOON. LITTLE  
OR NO SNOW ACCUMULATION. CHANCE OF SNOW NEAR  
100 PERCENT.  
MAX TEMPERATURE.....22-27.  
24 HR TREND......28 DEGREES COOLER.  
MIN HUMIDITY........63-69 PERCENT.  
24 HR TREND......17 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST WINDS 15 TO 20 MPH. GUSTS UP TO 30  
MPH UNTIL 1500, THEN 20 MPH.  
RIDGE TOP WINDS.....NORTHWEST 20 TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.45 PERCENT UNTIL 1200, THEN 5 PERCENT.  
TRANSPORT WINDS.....NORTHWEST 30 TO 35 MPH UNTIL 1500, THEN AROUND  
20 MPH.  
MIXING HEIGHT.......1600-3000 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
MIN TEMPERATURE.....8-13.  
24 HR TREND......9 DEGREES COOLER.  
MAX HUMIDITY........86-92 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN  
SOUTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN  
SOUTHEAST.  
MIXING HEIGHT.......400-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
MAX TEMPERATURE.....30-35.  
24 HR TREND......9 DEGREES WARMER.  
MIN HUMIDITY........41-47 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN  
SOUTHEAST AROUND 10 MPH.  
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......400-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS  
AFTER MIDNIGHT. LOWS IN THE LOWER 20S. WINDS GENERALLY LESS THAN  
10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 6. HIGHS IN THE UPPER 20S. NORTHWEST  
WINDS AROUND 10 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
AROUND 4 BELOW. HIGHS AROUND 14. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 5. HIGHS IN THE LOWER 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 16. HIGHS IN  
THE MID 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 40S.  
 

 
 
WYZ275-222345-  
NORTH BIG HORN BASIN/WORLAND BLM-  
INCLUDING THE CITIES OF GREYBULL, LOVELL, AND POWELL  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SNOW  
SHOWERS IN THE MORNING. LITTLE OR NO SNOW  
ACCUMULATION. CHANCE OF SNOW NEAR 100 PERCENT.  
MAX TEMPERATURE.....21-26.  
24 HR TREND......22 DEGREES COOLER.  
MIN HUMIDITY........59-65 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......BREEZY. NORTHWEST WINDS 20 TO 25 MPH. GUSTS UP  
TO 40 MPH UNTIL 1200, THEN 30 MPH.  
RIDGE TOP WINDS.....NORTHWEST 25 TO 30 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.15 PERCENT UNTIL 1200, THEN ZERO PERCENT.  
TRANSPORT WINDS.....NORTH 30 TO 35 MPH UNTIL 1500, THEN AROUND 25  
MPH.  
MIXING HEIGHT.......1400-2600 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
MIN TEMPERATURE.....7-12.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........84-90 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO  
AROUND 15 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN  
SOUTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH UNTIL 2100, THEN AROUND  
10 MPH UNTIL 2400, THEN SOUTHWEST UNTIL 0300,  
THEN SOUTHEAST.  
MIXING HEIGHT.......400-1600 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
MAX TEMPERATURE.....28-33.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........44-50 PERCENT.  
24 HR TREND......14 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN  
SOUTHEAST AROUND 10 MPH. GUSTS UP TO 15 MPH.  
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......400-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS  
IN THE EVENING, THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT. LOWS  
IN THE LOWER 20S. WINDS GENERALLY LESS THAN 10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 6. HIGHS IN THE MID 20S. NORTHWEST WINDS  
AROUND 15 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
AROUND 1 BELOW. HIGHS AROUND 14. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 7. HIGHS IN THE LOWER 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 18. HIGHS IN  
THE MID 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 40S.  
 

 
 
WYZ276-222345-  
CODY FOOTHILLS-  
INCLUDING THE CITIES OF CLARK, CODY, AND MEETEETSE  
553 AM MDT THU OCT 22 2020  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON MDT TODAY
 
 
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SNOW  
SHOWERS EARLY IN THE MORNING. NUMEROUS SNOW  
SHOWERS EARLY IN THE MORNING, THEN SCATTERED  
SNOW SHOWERS LATE IN THE MORNING. PATCHY  
BLOWING SNOW IN THE MORNING. LITTLE OR NO SNOW  
ACCUMULATION. CHANCE OF SNOW NEAR 100 PERCENT.  
MAX TEMPERATURE.....17-22.  
24 HR TREND......29 DEGREES COOLER.  
MIN HUMIDITY........68-74 PERCENT.  
24 HR TREND......23 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS 15 TO 20 MPH. GUSTS UP TO 30 MPH  
UNTIL 1500.  
RIDGE TOP WINDS.....NORTH 20 TO 25 MPH UNTIL 1500, THEN AROUND 15  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.20 PERCENT UNTIL 1200, THEN ZERO PERCENT.  
TRANSPORT WINDS.....NORTH 25 TO 30 MPH UNTIL 1500, THEN AROUND 20  
MPH.  
MIXING HEIGHT.......1400-2400 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. WIDESPREAD FROST EARLY IN THE  
EVENING.  
MIN TEMPERATURE.....8-13.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN  
SOUTHWEST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2100, THEN SOUTHWEST.  
MIXING HEIGHT.......400-1200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
MAX TEMPERATURE.....29-34.  
24 HR TREND......10 DEGREES WARMER.  
MIN HUMIDITY........45-51 PERCENT.  
24 HR TREND......24 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN  
SOUTHEAST AROUND 10 MPH.  
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......400-1800 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. SCATTERED SNOW  
SHOWERS IN THE EVENING, THEN NUMEROUS SNOW SHOWERS AFTER  
MIDNIGHT. LOWS IN THE LOWER 20S. WINDS GENERALLY LESS THAN  
10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 3. HIGHS IN THE LOWER 20S. NORTH WINDS  
AROUND 15 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS  
AROUND 2 BELOW. HIGHS AROUND 9. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 10. HIGHS IN THE  
MID 20S. SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS IN THE LOWER 20S.  
HIGHS IN THE MID 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 40S.  
 

 
 
WYZ287-222345-  
OWL CREEK MOUNTAINS-  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS IN THE MORNING.  
NUMEROUS SNOW SHOWERS LATE IN THE MORNING.  
ISOLATED SNOW SHOWERS EARLY IN THE AFTERNOON.  
PATCHY BLOWING SNOW IN THE MORNING. SNOW  
ACCUMULATION OF 1 TO 0 INCHES. CHANCE OF SNOW  
NEAR 100 PERCENT.  
MAX TEMPERATURE.....18-23.  
24 HR TREND......32 DEGREES COOLER.  
MIN HUMIDITY........62-68 PERCENT.  
24 HR TREND......31 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS 15 TO 20 MPH. GUSTS UP TO 30 MPH  
UNTIL 1500, THEN 20 MPH.  
RIDGE TOP WINDS.....NORTH 20 TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.60 PERCENT UNTIL 1200, THEN ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 30 MPH UNTIL 1500, THEN AROUND 20  
MPH.  
MIXING HEIGHT.......1600-2600 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
MIN TEMPERATURE.....8-13.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........83-89 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2400, THEN  
SOUTH AROUND 10 MPH.  
RIDGE TOP WINDS.....NORTHEAST 10 TO 15 MPH UNTIL 2400, THEN SOUTH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH AROUND 15 MPH UNTIL 2100, THEN SOUTH.  
MIXING HEIGHT.......600-1600 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....27-32.  
24 HR TREND......8 DEGREES WARMER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......23 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH WINDS AROUND 10 MPH.  
RIDGE TOP WINDS.....SOUTH AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.  
MIXING HEIGHT.......400-1800 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. PARTLY CLOUDY. SCATTERED SNOW  
SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 20S. SOUTHWEST WINDS  
AROUND 10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 4. HIGHS IN THE UPPER 20S. NORTHWEST  
WINDS AROUND 15 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
AROUND 3 BELOW. HIGHS AROUND 8. NORTH WINDS AROUND 10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 8. HIGHS AROUND  
19. WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS IN THE LOWER 20S.  
HIGHS IN THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 40S.  
 

 
 
WYZ286-222345-  
ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-  
INCLUDING THE CITY OF PAHASKA  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY CLOUDY THEN BECOMING PARTLY  
CLOUDY. SNOW SHOWERS EARLY IN THE MORNING.  
SCATTERED SNOW SHOWERS EARLY IN THE AFTERNOON.  
LITTLE OR NO SNOW ACCUMULATION. CHANCE OF SNOW  
NEAR 100 PERCENT.  
MAX TEMPERATURE.....17-22.  
24 HR TREND......27 DEGREES COOLER.  
MIN HUMIDITY........58-64 PERCENT.  
24 HR TREND......24 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH UNTIL 1200, THEN  
NORTHEAST. GUSTS UP TO 15 MPH.  
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 1200, THEN NORTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT UNTIL 1200, THEN 5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1200-2600 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SCATTERED SNOW SHOWERS EARLY IN  
THE EVENING. ISOLATED SNOW SHOWERS LATE IN THE  
EVENING. WIDESPREAD FROST EARLY IN THE EVENING.  
CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....2-7.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........87-93 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 2100, THEN  
WEST AROUND 10 MPH.  
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 2100, THEN SOUTHWEST.  
MIXING HEIGHT.......400-1400 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY  
SUNNY THEN BECOMING PARTLY CLOUDY. ISOLATED  
SNOW SHOWERS IN THE AFTERNOON. CHANCE OF SNOW  
20 PERCENT.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......12 DEGREES WARMER.  
MIN HUMIDITY........40-46 PERCENT.  
24 HR TREND......26 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 15  
MPH UNTIL 1200, THEN 20 MPH.  
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.  
MIXING HEIGHT.......600-2600 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. SCATTERED SNOW  
SHOWERS IN THE EVENING, THEN SNOW SHOWERS AFTER MIDNIGHT. PATCHY  
BLOWING SNOW THROUGH THE NIGHT. LOWS IN THE LOWER 20S. WEST WINDS  
AROUND 15 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON  
AND EVENING. LOWS AROUND 3 BELOW. HIGHS IN THE MID 20S. NORTH  
WINDS AROUND 10 MPH.    
SUNDAY
 
MUCH COLDER. PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS  
AROUND 6 BELOW. HIGHS AROUND 5. NORTHEAST WINDS AROUND 10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 7. HIGHS AROUND  
20. WEST WINDS AROUND 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 20. HIGHS IN  
THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE UPPER 30S.  
 

 
 
WYZ140-222345-  
YELLOWSTONE NATIONAL PARK-  
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY. SNOW  
SHOWERS EARLY IN THE MORNING. NO SNOW  
ACCUMULATION. CHANCE OF SNOW NEAR 100 PERCENT.  
MAX TEMPERATURE.....23-28.  
24 HR TREND......19 DEGREES COOLER.  
MIN HUMIDITY........44-50 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH WITH HIGHER GUSTS  
UNTIL 1500, THEN UPSLOPE/UPVALLEY 5-9 MPH.  
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.  
MIXING HEIGHT.......1200-3200 FT AGL UNTIL 1500, THEN 3800-4400 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. WIDESPREAD FROST IN THE EVENING.  
MIN TEMPERATURE.....6-11.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........76-82 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2400, THEN SOUTH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 2400, THEN SOUTH.  
MIXING HEIGHT.......400-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY THEN  
BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY  
CLOUDY. ISOLATED SNOW SHOWERS IN THE AFTERNOON.  
CHANCE OF SNOW 20 PERCENT.  
MAX TEMPERATURE.....29-34.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......14 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN  
SOUTHWEST 10 TO 15 MPH WITH HIGHER GUSTS.  
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH UNTIL 1200, THEN SOUTHWEST  
AROUND 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH UNTIL 1200, THEN SOUTHWEST  
20 TO 25 MPH.  
MIXING HEIGHT.......400-1000 FT AGL UNTIL 1200, THEN 2800-3400 FT  
AGL.  
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN FAIR TO GOOD.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. NUMEROUS SNOW SHOWERS IN THE  
EVENING, THEN SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 20S.  
SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
SNOW SHOWERS. LOWS AROUND 6 BELOW. HIGHS IN THE MID  
20S. NORTH WINDS AROUND 10 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY WITH ISOLATED SNOW SHOWERS. LOWS  
AROUND 7 BELOW. HIGHS AROUND 11. WINDS GENERALLY LESS THAN  
10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 4. HIGHS IN THE  
LOWER 20S. WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS AROUND 14. HIGHS IN THE LOWER 30S.   
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE UPPER 30S.  
 

 
 
WYZ415-222345-  
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-  
INCLUDING THE CITIES OF JACKSON AND MORAN  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY. SNOW SHOWERS EARLY IN THE  
MORNING. NO SNOW ACCUMULATION. CHANCE OF SNOW  
NEAR 100 PERCENT.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......17 DEGREES COOLER.  
MIN HUMIDITY........42-48 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH AND GUSTY.  
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......1400-1800 FT AGL UNTIL 1200, THEN 4200-5600 FT  
AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....8-13.  
24 HR TREND......7 DEGREES COOLER.  
MAX HUMIDITY........72-78 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 2400, THEN SOUTH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 2100, THEN  
NORTHEAST UNTIL 2400, THEN SOUTHEAST.  
MIXING HEIGHT.......800-2600 FT AGL UNTIL 2400, THEN 400-600 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY THEN  
BECOMING PARTLY CLOUDY. ISOLATED SNOW SHOWERS  
IN THE AFTERNOON. CHANCE OF SNOW 20 PERCENT.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........28-34 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN  
SOUTHWEST AROUND 10 MPH WITH HIGHER GUSTS.  
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST  
15 TO 20 MPH.  
MIXING HEIGHT.......400-1000 FT AGL UNTIL 1200, THEN 2600-3400 FT  
AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. CLOUDY. SCATTERED SNOW SHOWERS IN  
THE EVENING, THEN SNOW SHOWERS AFTER MIDNIGHT. LOWS IN THE MID  
20S. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
SNOW SHOWERS. LOWS AROUND 2. HIGHS IN THE LOWER 30S.  
NORTHWEST WINDS AROUND 10 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
AROUND 5 BELOW. HIGHS AROUND 15. NORTHEAST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 5. HIGHS IN THE LOWER 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS AROUND 15. HIGHS IN THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE UPPER 30S.  
 

 
 
WYZ416-222345-  
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY. SNOW SHOWERS EARLY IN THE  
MORNING. SCATTERED SNOW SHOWERS EARLY IN THE  
MORNING, THEN SNOW SHOWERS EARLY IN THE  
AFTERNOON. NO SNOW ACCUMULATION. CHANCE OF SNOW  
NEAR 100 PERCENT.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......20 DEGREES COOLER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH.  
RIDGE TOP WINDS.....WEST AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......1600-2200 FT AGL UNTIL 1200, THEN 4200-5400 FT  
AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....6-11.  
24 HR TREND......10 DEGREES COOLER.  
MAX HUMIDITY........76-82 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 2100, THEN NORTH  
UNTIL 2400, THEN SOUTHWEST.  
MIXING HEIGHT.......800-2600 FT AGL UNTIL 2400, THEN 400-600 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY  
SUNNY THEN BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....27-32.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........28-34 PERCENT.  
24 HR TREND......15 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN  
SOUTHWEST AROUND 10 MPH AND GUSTY.  
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......400-2400 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. ISOLATED SNOW SHOWERS  
IN THE EVENING, THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. LOWS  
AROUND 20. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW IN THE AFTERNOON.  
LOWS AROUND 3. HIGHS IN THE LOWER 30S. SOUTHWEST WINDS AROUND  
10 MPH.    
SUNDAY
 
MUCH COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS AROUND 6 BELOW. HIGHS AROUND 10. NORTHEAST WINDS AROUND  
10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 3. HIGHS AROUND 20. WINDS  
GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 16. HIGHS IN  
THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE UPPER 30S.  
 

 
 
WYZ288-222345-  
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-  
INCLUDING THE CITIES OF DUBOIS AND SOUTH PASS  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. SNOW  
SHOWERS UNTIL LATE AFTERNOON. NUMEROUS SNOW  
SHOWERS LATE IN THE AFTERNOON. LITTLE OR NO  
SNOW ACCUMULATION. CHANCE OF SNOW NEAR 100  
PERCENT.  
MAX TEMPERATURE.....22-27.  
24 HR TREND......29 DEGREES COOLER.  
MIN HUMIDITY........49-55 PERCENT.  
24 HR TREND......26 PERCENT WETTER.  
20-FOOT WINDS.......WEST WINDS AROUND 10 MPH UNTIL 0900, THEN  
NORTHEAST.  
RIDGE TOP WINDS.....WEST AROUND 15 MPH UNTIL 0900, THEN NORTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.30 PERCENT UNTIL 1200, THEN 15 PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH UNTIL 0900, THEN EAST.  
MIXING HEIGHT.......1600-3200 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SCATTERED SNOW SHOWERS EARLY IN  
THE EVENING. ISOLATED SNOW SHOWERS LATE IN THE  
EVENING. CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....4-9.  
24 HR TREND......9 DEGREES COOLER.  
MAX HUMIDITY........81-87 PERCENT.  
24 HR TREND......2 PERCENT WETTER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH UNTIL 2100, THEN  
WEST UNTIL 2400, THEN DOWNSLOPE/DOWNVALLEY 4-7  
MPH.  
RIDGE TOP WINDS.....NORTHEAST AROUND 15 MPH UNTIL 2100, THEN WEST  
UNTIL 2400, THEN SOUTHWEST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 15 MPH UNTIL 2400, THEN NORTHWEST  
UNTIL 0300, THEN SOUTHWEST.  
MIXING HEIGHT.......400-1800 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN  
BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....27-32.  
24 HR TREND......9 DEGREES WARMER.  
MIN HUMIDITY........29-35 PERCENT.  
24 HR TREND......27 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN  
SOUTHWEST 10 TO 15 MPH WITH HIGHER GUSTS.  
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN AROUND  
20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN WEST  
AROUND 20 MPH.  
MIXING HEIGHT.......400-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. PARTLY CLOUDY. ISOLATED SNOW SHOWERS  
IN THE EVENING, THEN SCATTERED SNOW SHOWERS AFTER MIDNIGHT.  
PATCHY BLOWING SNOW AFTER MIDNIGHT. LOWS IN THE LOWER 20S.  
SOUTHWEST WINDS AROUND 15 MPH.    
SATURDAY
 
SNOW SHOWERS. PATCHY BLOWING SNOW. PATCHY BLOWING  
SNOW AFTER MIDNIGHT. LOWS NEAR ZERO. HIGHS IN THE MID 30S. WEST  
WINDS AROUND 15 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY. PATCHY BLOWING SNOW.  
SCATTERED SNOW SHOWERS. LOWS AROUND 4 BELOW. HIGHS AROUND 7.  
NORTHEAST WINDS AROUND 10 MPH.    
MONDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 7. HIGHS AROUND  
18. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS IN THE LOWER 20S.  
HIGHS IN THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS AROUND 40.  
 

 
 
WYZ414-222345-  
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-  
INCLUDING THE CITY OF AFTON  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY. SNOW  
SHOWERS EARLY IN THE MORNING. NO SNOW  
ACCUMULATION. CHANCE OF SNOW NEAR 100 PERCENT.  
MAX TEMPERATURE.....31-36.  
24 HR TREND......18 DEGREES COOLER.  
MIN HUMIDITY........27-33 PERCENT.  
24 HR TREND......9 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH HIGHER  
GUSTS.  
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
MIXING HEIGHT.......1400-1800 FT AGL UNTIL 1200, THEN 4800-5800 FT  
AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....13-18.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........67-73 PERCENT.  
24 HR TREND......20 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN  
SOUTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN  
SOUTHEAST.  
MIXING HEIGHT.......2600-2800 FT AGL UNTIL 2100, THEN 400-600 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY SUNNY THEN BECOMING PARTLY  
CLOUDY.  
MAX TEMPERATURE.....35-40.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN  
SOUTHWEST AROUND 10 MPH AND GUSTY.  
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 1200, THEN WEST.  
MIXING HEIGHT.......600-2600 FT AGL UNTIL 1500, THEN 2800-3200 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. SCATTERED SNOW  
SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 20S. SOUTHWEST WINDS  
AROUND 10 MPH.    
SATURDAY
 
PATCHY BLOWING SNOW. SNOW SHOWERS. LOWS AROUND 11.  
HIGHS IN THE LOWER 30S. WEST WINDS AROUND 10 MPH.    
SUNDAY
 
COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS  
AROUND 1 BELOW. HIGHS AROUND 18. EAST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 7. HIGHS IN THE MID 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
MOSTLY CLEAR. LOWS AROUND 17. HIGHS IN THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS AROUND 40.  
 

 
 
WYZ278-222345-  
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-  
INCLUDING THE CITIES OF BIG PINEY, FARSON, AND PINEDALE  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.  
WIDESPREAD FROST EARLY IN THE MORNING.  
MAX TEMPERATURE.....34-39.  
24 HR TREND......19 DEGREES COOLER.  
MIN HUMIDITY........30-36 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH.  
RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......1200-1800 FT AGL UNTIL 1200, THEN 5000-6800 FT  
AGL.  
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....11-16.  
24 HR TREND......13 DEGREES COOLER.  
MAX HUMIDITY........66-72 PERCENT.  
24 HR TREND......2 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTH WINDS AROUND 10 MPH WITH GUSTS TO AROUND  
15 MPH UNTIL 2100, THEN SOUTHEAST UNTIL 2400,  
THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTH AROUND 15 MPH UNTIL 2100, THEN SOUTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......2400-3000 FT AGL UNTIL 2100, THEN 400-800 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY CLOUDY THEN BECOMING PARTLY  
CLOUDY THEN BECOMING MOSTLY SUNNY THEN BECOMING  
PARTLY CLOUDY.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........20-26 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN  
SOUTHWEST AROUND 10 MPH.  
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 1200, THEN  
SOUTHWEST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 0900, THEN NORTHWEST  
UNTIL 1200, THEN SOUTHWEST.  
MIXING HEIGHT.......400-2000 FT AGL UNTIL 1500, THEN 2400-2600 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. PARTLY CLOUDY. SCATTERED SNOW  
SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 20S. WINDS GENERALLY LESS  
THAN 10 MPH.    
SATURDAY
 
CLOUDY WITH NUMEROUS SHOWERS AND SNOW SHOWERS. LOWS  
AROUND 7. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS AROUND 15 MPH.    
SUNDAY
 
MUCH COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS AROUND 3 BELOW. HIGHS AROUND 19. EAST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 4. HIGHS IN THE UPPER 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS AROUND 14. HIGHS IN  
THE UPPER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 40S.  
 

 
 
WYZ277-222345-  
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-  
INCLUDING THE CITIES OF EVANSTON, FORT BRIDGER, AND KEMMERER  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....37-42.  
24 HR TREND......18 DEGREES COOLER.  
MIN HUMIDITY........22-28 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH HIGHER GUSTS.  
RIDGE TOP WINDS.....NORTHWEST 15 TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......1200-1600 FT AGL UNTIL 1200, THEN 4400-6000 FT  
AGL.  
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR THEN BECOMING PARTLY CLOUDY.  
MIN TEMPERATURE.....12-17.  
24 HR TREND......11 DEGREES COOLER.  
MAX HUMIDITY........67-73 PERCENT.  
24 HR TREND......1 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO  
AROUND 15 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH UNTIL 2400, THEN EAST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH UNTIL 2100, THEN NORTH  
AROUND 10 MPH UNTIL 2400, THEN EAST.  
MIXING HEIGHT.......3600-3800 FT AGL UNTIL 2100, THEN 400-800 FT  
AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....38-43.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........19-25 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN  
SOUTHWEST AROUND 10 MPH AND GUSTY.  
RIDGE TOP WINDS.....EAST AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 1200, THEN SOUTHWEST.  
MIXING HEIGHT.......400-1800 FT AGL UNTIL 1500, THEN 2400 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. PARTLY CLOUDY. ISOLATED SNOW SHOWERS  
AFTER MIDNIGHT. LOWS IN THE UPPER 20S. SOUTHWEST WINDS AROUND  
10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH NUMEROUS SNOW SHOWERS AND  
SCATTERED SHOWERS. LOWS AROUND 11. HIGHS IN THE LOWER 40S. WEST  
WINDS AROUND 15 MPH.    
SUNDAY
 
MUCH COLDER. PARTLY CLOUDY. SCATTERED SNOW SHOWERS.  
LOWS AROUND 2. HIGHS AROUND 20. EAST WINDS AROUND 10 MPH.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 6. HIGHS IN THE MID 20S.  
WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS AROUND 16. HIGHS IN  
THE UPPER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE MID 40S.  
 

 
 
WYZ279-222345-  
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-  
INCLUDING THE CITIES OF GREEN RIVER, ROCK SPRINGS, AND WAMSUTTER  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY.  
MAX TEMPERATURE.....38-43.  
24 HR TREND......23 DEGREES COOLER.  
MIN HUMIDITY........32-38 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS 10 TO 15 MPH WITH GUSTS TO AROUND  
25 MPH.  
RIDGE TOP WINDS.....NORTH 15 TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 0900, THEN 20 TO  
25 MPH.  
MIXING HEIGHT.......2000-4000 FT AGL.  
SMOKE DISPERSAL.....FAIR TO GOOD.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....16-21.  
24 HR TREND......17 DEGREES COOLER.  
MAX HUMIDITY........68-74 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......NORTHEAST WINDS 10 TO 15 MPH UNTIL 0300, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHEAST 15 TO 20 MPH UNTIL 0300, THEN AROUND  
10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH UNTIL 0300, THEN AROUND  
10 MPH.  
MIXING HEIGHT.......800-2600 FT AGL UNTIL 0300, THEN 600 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....38-43.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........22-28 PERCENT.  
24 HR TREND......11 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1500, THEN  
SOUTHWEST AROUND 10 MPH AND GUSTY.  
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 0900, THEN SOUTH  
UNTIL 1500, THEN SOUTHWEST AROUND 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....EAST AROUND 10 MPH UNTIL 0900, THEN NORTHWEST  
UNTIL 1200, THEN SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......400-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. PARTLY CLOUDY. LOWS IN THE UPPER  
20S. SOUTHWEST WINDS AROUND 10 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH NUMEROUS SNOW SHOWERS AND  
SCATTERED SHOWERS. LOWS AROUND 9. HIGHS IN THE LOWER 50S.  
NORTHWEST WINDS AROUND 15 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY. PATCHY BLOWING SNOW.  
SCATTERED SNOW SHOWERS. LOWS AROUND 1. HIGHS AROUND 15. NORTHEAST  
WINDS AROUND 15 MPH.    
MONDAY
 
PARTLY CLOUDY WITH ISOLATED SNOW SHOWERS. LOWS AROUND  
6. HIGHS IN THE LOWER 20S. NORTH WINDS AROUND 10 MPH.    
TUESDAY
 
NOT AS COOL. MOSTLY CLEAR. LOWS AROUND 17. HIGHS IN  
THE MID 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 40S.  
 

 
 
WYZ289-222345-  
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-  
INCLUDING THE CITY OF JEFFREY CITY  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. SNOW  
SHOWERS. NO SNOW ACCUMULATION. CHANCE OF SNOW  
90 PERCENT.  
MAX TEMPERATURE.....29-34.  
24 HR TREND......33 DEGREES COOLER.  
MIN HUMIDITY........53-59 PERCENT.  
24 HR TREND......33 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS 10 TO 15 MPH. GUSTS UP TO 15 MPH  
UNTIL 0900, THEN 25 MPH.  
RIDGE TOP WINDS.....NORTH 15 TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.25 PERCENT UNTIL 1200, THEN 5 PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 0900, THEN NORTH  
20 TO 25 MPH.  
MIXING HEIGHT.......1200-2600 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SCATTERED SNOW SHOWERS EARLY IN  
THE EVENING. ISOLATED SNOW SHOWERS LATE IN THE  
EVENING. CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....9-14.  
24 HR TREND......14 DEGREES COOLER.  
MAX HUMIDITY........80-86 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST WINDS 10 TO 15 MPH UNTIL 0300, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....EAST 15 TO 20 MPH UNTIL 0300, THEN SOUTHEAST  
AROUND 10 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH UNTIL 2400, THEN EAST  
AROUND 10 MPH.  
MIXING HEIGHT.......400-2000 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.  
MAX TEMPERATURE.....33-38.  
24 HR TREND......8 DEGREES WARMER.  
MIN HUMIDITY........29-35 PERCENT.  
24 HR TREND......31 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900, THEN  
SOUTHWEST 10 TO 15 MPH WITH HIGHER GUSTS.  
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1500, THEN AROUND  
20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1500, THEN AROUND  
25 MPH.  
MIXING HEIGHT.......400-1800 FT AGL UNTIL 1500, THEN 2400 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. LOWS IN THE UPPER  
20S. SOUTHWEST WINDS AROUND 15 MPH.    
SATURDAY
 
SNOW SHOWERS AND NUMEROUS SHOWERS. PATCHY BLOWING  
SNOW AFTER MIDNIGHT. LOWS AROUND 3. HIGHS IN THE LOWER 40S.  
NORTHWEST WINDS AROUND 20 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY. PATCHY BLOWING SNOW.  
SCATTERED SNOW SHOWERS. LOWS AROUND 2 BELOW. HIGHS AROUND 11.  
NORTHEAST WINDS AROUND 15 MPH.    
MONDAY
 
MOSTLY CLEAR WITH ISOLATED SNOW SHOWERS. LOWS AROUND 6.  
HIGHS AROUND 20. NORTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 18. HIGHS IN  
THE MID 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 40S.  
 

 
 
WYZ300-222345-  
CASPER MOUNTAIN-  
553 AM MDT THU OCT 22 2020  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS UNTIL LATE  
AFTERNOON, THEN NUMEROUS SNOW SHOWERS LATE IN  
THE AFTERNOON. SNOW ACCUMULATION OF 1 TO 0  
INCHES. CHANCE OF SNOW NEAR 100 PERCENT.  
MAX TEMPERATURE.....26-31.  
24 HR TREND......32 DEGREES COOLER.  
MIN HUMIDITY........67-73 PERCENT.  
24 HR TREND......44 PERCENT WETTER.  
20-FOOT WINDS.......NORTH WINDS 10 TO 15 MPH. GUSTS UP TO 15 MPH  
UNTIL 0900, THEN 25 MPH.  
RIDGE TOP WINDS.....NORTH 15 TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.65 PERCENT UNTIL 1200, THEN 30 PERCENT.  
TRANSPORT WINDS.....NORTH 15 TO 20 MPH.  
MIXING HEIGHT.......1200-2200 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SCATTERED SNOW SHOWERS EARLY IN  
THE EVENING, THEN ISOLATED SNOW SHOWERS LATE IN  
THE EVENING. CHANCE OF SNOW 50 PERCENT.  
MIN TEMPERATURE.....7-12.  
24 HR TREND......15 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......3 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......NORTHEAST WINDS AROUND 10 MPH WITH GUSTS TO  
AROUND 15 MPH UNTIL 2100, THEN  
DOWNSLOPE/DOWNVALLEY 4-7 MPH.  
RIDGE TOP WINDS.....NORTHEAST AROUND 15 MPH UNTIL 2400, THEN  
SOUTHEAST.  
LAL.................1.  
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.  
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH UNTIL 0300, THEN SOUTH.  
MIXING HEIGHT.......400-1600 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN  
BECOMING MOSTLY CLOUDY THEN BECOMING PARTLY  
CLOUDY.  
MAX TEMPERATURE.....32-37.  
24 HR TREND......5 DEGREES WARMER.  
MIN HUMIDITY........33-39 PERCENT.  
24 HR TREND......39 PERCENT DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200, THEN  
SOUTHWEST AROUND 10 MPH. GUSTS UP TO 15 MPH.  
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH UNTIL 1500, THEN SOUTHWEST  
AROUND 20 MPH.  
MIXING HEIGHT.......400-2400 FT AGL.  
SMOKE DISPERSAL.....POOR.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
NOT AS COLD. MOSTLY CLOUDY. LOWS IN THE UPPER  
20S. SOUTHWEST WINDS AROUND 15 MPH.    
SATURDAY
 
SNOW SHOWERS AND NUMEROUS SHOWERS. LOWS AROUND 4.  
HIGHS AROUND 40. NORTHWEST WINDS AROUND 15 MPH.    
SUNDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH NUMEROUS SNOW SHOWERS.  
LOWS AROUND 2 BELOW. HIGHS AROUND 8. NORTHEAST WINDS AROUND  
10 MPH.    
MONDAY
 
PARTLY CLOUDY WITH ISOLATED SNOW SHOWERS. LOWS AROUND  
7. HIGHS AROUND 17. WINDS GENERALLY LESS THAN 10 MPH.    
TUESDAY
 
NOT AS COLD. MOSTLY CLEAR. LOWS AROUND 20. HIGHS IN  
THE LOWER 30S.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS AROUND 40.  
 

 
 
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