436
FNUS75 KRIW 212203
FWSRIW
SPOT FORECAST FOR CEDAR STUMP...BLM
NATIONAL WEATHER SERVICE RIVERTON WY
403 PM MDT SAT MAR 21 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON MARCH 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
WESTERLY WINDS GUSTING UP TO 40 TO 45 MPH CURRENTLY BUT WILL START
TO DIMINISH TOWARDS SUNSET WITH GUSTS UP TO 30 MPH AFTER 1900 AND 15
TO 20 MPH AFTER 21-2200. AFTER THIS POINT, A COLD FRONT PUSHES
THROUGH THAT WILL TURN WINDS MORE NORTH TO NORTHEASTERLY AROUND THAT
SAME 15 TO 20 MPH SPEED. AFTER FRONTAL PASSAGE, WINDS WEAKEN TO LESS
THAN 10 MPH BECOMING SOUTHWESTERLY AFTER 0100. LOW CHANCES FOR
SHOWERS WITH THE COLD FRONT (<~20 PERCENT) BETWEEN THE HOURS OF 2300
UNTIL 0200 OVERNIGHT TONIGHT. OTHERWISE, PARTLY TO MOSTLY CLOUDY
SKIES THIS EVENING AND OVERNIGHT SEEING MORE SUN BY LATE SUNDAY
MORNING. WINDS INCREASE ONCE AGAIN BY 1100 SUNDAY OUT OF THE WEST
AROUND 15 TO 20 MPH. ABOVE AVERAGE TEMPERATURES ONCE AGAIN CONTINUE
BUT NOT AS WARM (10 TO 15 DEGREES COOLER FOR SUNDAY AFTERNOON. SMOKE
DISPERSAL WILL BE EXCELLENT WITH THE BREEZY CONDITIONS BUT ONLY FAIR
OVERNIGHT AFTER 2200.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........14 PERCENT.
WIND (20 FT)........WINDY. WEST WINDS AROUND 30 MPH WITH GUSTS TO
AROUND 45 MPH.
RIDGETOP WIND.......WEST AROUND 45 MPH.
MIXING HEIGHT.......10000 FT AGL UNTIL 1700, THEN 8000 FT AGL.
TRANSPORT WINDS.....WEST 43 TO 44 MPH.
SMOKE DISPERSAL.....EXCELLENT.
TIME (MDT) 4PM 5PM
SKY (%).........65 70
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0
CHC OF PCPN (%).0 0
CHC OF THDR (%).0 0
TEMP............65 63
RH..............18 20
20 FT WIND DIR..W W
20 FT WIND SPD..30 30
20 FT WIND GUST.46 46
RIDGE WIND DIR..W W
RIDGE WIND SPD..45 45
MIX HGT (KFT)...10 8.0
TRANSP WIND DIR.W W
TRANSP WIND SPD.44 43
SDSPL KT-FT/1000378 295
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (75-85 PERCENT). SCATTERED RAIN
SHOWERS OVERNIGHT. ISOLATED RAIN SHOWERS AFTER
3 AM. ISOLATED SNOW SHOWERS AFTER 3 AM.
CWR.................2 PERCENT.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
MIN TEMPERATURE.....AROUND 34.
MAX HUMIDITY........85 PERCENT.
WIND (20 FT)........BREEZY. WEST WINDS 24 TO 29 MPH WITH GUSTS TO
AROUND 44 MPH UNTIL 2000, THEN 14 TO 18 MPH
WITH GUSTS TO AROUND 26 MPH UNTIL 2200, THEN
NORTH AROUND 11 MPH WITH GUSTS TO AROUND 16 MPH
UNTIL 2400, THEN SOUTHEAST 8 TO 10 MPH UNTIL
0200, THEN SOUTHWEST AROUND 7 MPH UNTIL 0300,
THEN LIGHT.
RIDGETOP WIND.......WEST 35 TO 40 MPH UNTIL 2000, THEN NORTHWEST
AROUND 30 MPH UNTIL 2100, THEN WEST AROUND 20
MPH UNTIL 2200, THEN NORTH UNTIL 2400, THEN
SOUTHEAST UNTIL 0200, THEN SOUTHWEST.
MIXING HEIGHT.......4000 FT AGL UNTIL 1900, THEN 500 FT AGL AFTER
2300.
TRANSPORT WINDS.....NORTHWEST 35 TO 41 MPH UNTIL 2000, THEN 22 TO
28 MPH UNTIL 2200, THEN NORTHEAST 15 TO 18 MPH
UNTIL 0200, THEN WEST AROUND 14 MPH UNTIL 0300,
THEN SOUTHWEST 10 TO 12 MPH.
SMOKE DISPERSAL.....VERY GOOD UNTIL 2200, THEN FAIR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........65 60 45 45 65 70 65 80 80 90 85 80
WEATHER COV..... SCT SCT ISO ISO
WEATHER TYPE.... RW RW RS SW
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 10 10 10 10 10 30 30 10 10 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............59 56 52 49 44 41 39 38 37 36 36 35
RH..............23 28 36 43 57 68 76 79 80 83 82 83
20 FT WIND DIR..W W NW W N N SE S SW SW SW SW
20 FT WIND SPD..29 24 18 14 11 11 10 8 7 6 6 5
20 FT WIND GUST.44 36 26 19 16 16 14 12 10 7 7 6
RIDGE WIND DIR..W W NW W N N SE S SW SW SW SW
RIDGE WIND SPD..40 35 30 20 20 20 15 15 15 10 10 10
MIX HGT (KFT)...4.0 0.1 0.1 0.1 0.1 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W NW NW NW NE N NE NE W SW W SW
TRANSP WIND SPD.41 35 28 22 18 18 17 15 14 12 12 10
SDSPL KT-FT/1000149 4 0 0 0 10 8 8 8 7 7 6
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 48.
MIN HUMIDITY........27 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1100, THEN WEST 7 TO 11 MPH
WITH GUSTS TO AROUND 21 MPH.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 1500, THEN 15 TO 20
MPH.
MIXING HEIGHT.......500 FT AGL UNTIL 0700, THEN 2000 FT AGL AFTER
0900 UNTIL 1200, THEN 3500 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 18 MPH UNTIL 1300, THEN 18 TO 23
MPH.
SMOKE DISPERSAL.....FAIR EARLY IN THE MORNING
INCREASING TO GOOD AFTER 1100.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........70 70 60 60 55 45 30 20 25 25 35 35
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............35 35 35 37 39 41 42 45 46 47 48 48
RH..............83 83 80 70 65 55 49 43 35 30 27 26
20 FT WIND DIR..SW W W W W W W W W W W W
20 FT WIND SPD..5 5 5 6 6 7 8 9 10 11 11 10
20 FT WIND GUST.6 6 6 10 12 16 17 18 19 21 20 19
RIDGE WIND DIR..SW W W W W W W W W W W W
RIDGE WIND SPD..10 10 10 10 10 15 15 15 15 20 20 15
MIX HGT (KFT)...0.5 0.1 0.1 0.5 2.0 2.0 2.5 3.0 3.0 3.5 3.0 2.5
TRANSP WIND DIR.SW SW W W W W W W W W W W
TRANSP WIND SPD.10 10 10 12 13 15 18 20 22 23 22 18
SDSPL KT-FT/10006 0 0 7 20 24 38 51 60 66 60 43
FORECAST DAYS 3 THROUGH 5
MONDAY
MOSTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WEST
WINDS AROUND 7 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S.
WEST WINDS AROUND 11 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE LOWER 60S. WEST
WINDS AROUND 20 MPH.
FORECASTER...LOWE
REQUESTED BY...EDDIE
TYPE OF REQUEST...WILDFIRE
.TAG 2607027.0/RIW
.DELDT 03/21/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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