377
FNUS75 KRIW 082257
FWSRIW
SPOT FORECAST FOR COW CAMP...UNITED STATES WILDLAND FIRE SERVICE
NATIONAL WEATHER SERVICE RIVERTON WY
457 PM MDT TUE SEP 8 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON SEPTEMBER 09.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
DRY CONDITIONS PERSIST FOR THE NEXT SEVERAL DAYS AS A DRY
WEST TO NORTHWEST FLOW ALOFT CONTINUES OVER THE REGION. THIS LEADS
TO POOR OVERNIGHT HUMIDITY RECOVERY AND DAYTIME HUMIDITY MINIMUMS
IN THE TEENS. DAYTIME HIGHS REMAIN JUST A TAD ABOVE NORMAL WEDNESDAY
BEFORE CLIMBING A BIT MORE THURSDAY. EXPECT AFTERNOON AND EARLY
EVENING WEST TO NORTHWEST WIND EACH DAY. TAKING A PEEK AHEAD, EARLY
INDICATIONS ARE THAT A SURFACE COLD FRONT PUSHES ACROSS THE BIGHORNS
FRIDAY AFTERNOON. THIS ALLOWS FOR GUSTY NORTHWEST WIND, COOLER
TEMPERATURES, AND IMPROVING HUMIDITY RECOVERY FRIDAY NIGHT.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
WEDNESDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67 TO 70.
MIN HUMIDITY........14 TO 17 PERCENT.
WIND (20 FT)........EAST WIND 4 TO 7 MPH UNTIL 0900, THEN GRADUALLY
BECOMING WEST-NORTHWEST 7 TO 12 MPH WITH
OCCASIONAL GUSTS TO AROUND 20 MPH BY 1200.
RIDGETOP WIND.......WEST-SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN
BECOMING WEST-NORTHWEST 15 TO 20 MPH.
MIXING HEIGHT.......1500 FT AGL UNTIL 1000, THEN GRADUALLY RISING TO
AROUND 5000 FT AGL BY 1300.
TRANSPORT WINDS.....EAST 5 TO 10 MPH UNTIL 0800, THEN GRADUALLY
BECOMING WEST 10 TO 15 MPH BY 1100. EVENTUALLY
BECOMING NORTHWEST 15 TO 20 MPH AFTER 1500.
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN GRADUALLY BECOMING
GOOD BY 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........5 15 5 0 0 0 5 5 5 0 0 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............44 43 47 50 54 57 60 63 65 66 67 65
RH..............48 48 41 37 34 29 25 23 19 16 15 16
20 FT WIND DIR..S S S W W W W W W W W NW
20 FT WIND SPD..6 5 4 4 6 7 9 9 11 11 10 10
20 FT WIND GUST.7 6 6 6 7 10 13 14 18 18 17 17
RIDGE WIND DIR..S S S W W W W W W W W NW
RIDGE WIND SPD..10 10 10 10 10 15 15 15 20 20 15 15
MIX HGT (KFT)...0.5 0.5 0.5 1.5 2.5 3.0 4.0 4.5 5.0 5.5 5.0 5.0
TRANSP WIND DIR.W W W W W W W W W W W NW
TRANSP WIND SPD.12 10 9 9 12 14 16 17 18 20 20 18
SDSPL KT-FT/10005 5 4 12 23 37 53 69 77 89 89 78
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46 TO 49.
MAX HUMIDITY........26 TO 29 PERCENT.
WIND (20 FT)........NORTHWEST WIND 10 TO 15 MPH WITH GUSTS AROUND
20 MPH UNTIL 1900, THEN BECOMING EAST-SOUTHEAST
5 TO 8 MPH BY 2130.
RIDGETOP WIND.......NORTHWEST 14 TO 18 MPH UNTIL 2000, THEN
BECOMING NORTHEAST AROUND 10 MPH BY 2200.
MIXING HEIGHT.......5000 FT AGL UNTIL 1900, THEN FALLING TO LESS
THAN 1000 FT AGL BY 2100.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2000, THEN
BECOMING NORTHEAST AROUND 10 MPH BY 2200.
AFTER MIDNIGHT, BECOMING EAST-SOUTHEAST
5 TO 10 MPH.
SMOKE DISPERSAL.....GOOD UNTIL 1900, THEN POOR BY 2100.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........5 10 5 5 10 10 5 10 10 10 10 15
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............65 62 56 55 55 54 54 53 52 52 51 51
RH..............17 19 21 22 24 25 26 27 28 28 28 29
20 FT WIND DIR..NW NW N NE E E SE SE SE N N N
20 FT WIND SPD..7 5 4 5 4 4 4 4 4 5 6 6
20 FT WIND GUST.11 6 6 6 6 6 6 6 6 7 8 8
RIDGE WIND DIR..NW NW N NE E E SE SE SE N N N
RIDGE WIND SPD..15 10 10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...5.0 3.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.NW NW N NE E SE S SE SW W W W
TRANSP WIND SPD.16 10 9 10 9 9 9 9 9 10 12 12
SDSPL KT-FT/100080 35 4 5 4 4 4 4 4 4 5 5
THURSDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........10 TO 13 PERCENT.
WIND (20 FT)........EAST-SOUTHEAST 4 TO 7 MPH UNTIL 0900, THEN
BECOMING WEST 8 TO 13 MPH WITH GUSTS AROUND
20 MPH BY 1200.
RIDGETOP WIND.......NORTH TO NORTHEAST AROUND 10 MPH UNTIL 0900,
THEN BECOMING WEST-NORTHEAST 13 TO 18 MPH
BY 1200.
MIXING HEIGHT.......LESS THAN 1000 FT AGL UNTIL 1000, THEN SLOWLY
RISING TO AROUND 6000 FT AGL BY 1400.
TRANSPORT WINDS.....EAST 5 TO 9 MPH UNTIL 0900, THEN BECOMING
WEST 14 TO 20 MPH BY 1200.
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN BECOMING VERY GOOD
BY 1400.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........5 10 15 0 0 0 0 0 0 0 5 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............50 49 52 57 61 65 69 71 72 73 73 72
RH..............29 29 25 20 17 15 14 12 11 10 9 9
20 FT WIND DIR..N NW NW W W W W W W W W W
20 FT WIND SPD..6 6 5 4 5 7 9 10 11 11 10 9
20 FT WIND GUST.8 8 7 7 10 12 14 17 18 18 18 17
RIDGE WIND DIR..N NW NW W W W W W W W W W
RIDGE WIND SPD..10 10 10 10 10 15 15 15 20 20 15 15
MIX HGT (KFT)...0.5 0.5 1.0 1.5 2.5 3.5 4.0 5.0 5.5 6.5 5.5 5.0
TRANSP WIND DIR.NW W W W W W W W W W W W
TRANSP WIND SPD.12 12 10 9 12 14 16 17 18 20 18 17
SDSPL KT-FT/10005 6 9 12 24 40 59 74 91 109 90 73
FORECAST DAYS 3 THROUGH 5
THURSDAY NIGHT
MOSTLY CLEAR. WEST WIND 10 TO 20 MPH EARLY IN THE EVENING, THEN
DECREASING AND BECOMING EASTERLY 5 TO 10 MPH. LOWS NEAR 50.
FRIDAY
MOSTLY CLEAR. HIGHS AROUND 70. LOWS IN THE LOWER 40S FRIDAY NIGHT.
WIND BECOMING WEST 10 TO 20 MPH EARLY IN THE AFTERNOON BEFORE
SHIFTING TO THE NORTHWEST 15 TO 25 MPH BEHIND A LATE DAY COLD FRONT.
SATURDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF AFTERNOON AND EARLY EVENING
SHOWERS. HIGHS IN THE LOWER 60S. LOWS IN THE LOWER 40S SATURDAY
NIGHT. SOUTHEAST WIND AROUND 10 MPH.
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF AFTERNOON
THUNDERSTORMS. HIGHS IN THE UPPER 50S. LOWS 40 TO 45 SUNDAY NIGHT.
EAST WIND 10 TO 15 MPH.
FORECASTER...CNJ
REQUESTED BY...JON WARDER
TYPE OF REQUEST...WILDFIRE
.TAG 2621182.9/RIW
.DELDT 09/08/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCDC@FIRENET.GOV,KADEN_MCELHINNY@HOTMAIL.COM,JONATHAN.WARDER@USDA.GOV
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