078
FNUS75 KRIW 231329
FWSRIW
SPOT FORECAST FOR IRON MOUNTAIN PILE RX...USWFS
NATIONAL WEATHER SERVICE RIVERTON WY
629 AM MST MON FEB 23 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 MST ON FEBRUARY 23.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY AFTERNOON...
DISCUSSION
DRY CONDITIONS AND HIGH CLOUDS THROUGH THE DAY TODAY. WINDS WILL
BE LIGHT FROM THE EAST-SOUTHEAST. GUSTS UP TO 15 MPH WILL BE
POSSIBLE BETWEEN 1600 AND 1900 AND TURN TO THE NORTH. DRY
CONDITIONS CONTINUE TUESDAY, WITH WINDS TURNING WESTERLY BY 1000.
GUSTS OF 25 TO 30 MPH WILL OCCUR BETWEEN 1200 AND 1800. WIND GUSTS
AROUND 20 MPH WILL CONTINUE THROUGH THE OVERNIGHT HOURS TUESDAY
NIGHT.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 45.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......EAST 10 TO 15 MPH UNTIL 1600, THEN NORTH.
MIXING HEIGHT.......2000 FT AGL UNTIL 1400, THEN 2500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 12 TO 13 MPH UNTIL 1300, THEN
SOUTHWEST UNTIL 1600, THEN WEST AROUND 12 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........35 35 35 30 35 35 35 55 65 60
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0
TEMP............29 34 38 40 41 43 44 44 43 42
RH..............52 46 43 39 37 36 36 36 38 40
20 FT WIND DIR..E E E E SE SE SE E N N
20 FT WIND SPD..6 6 6 6 6 5 5 5 5 5
20 FT WIND GUST. 6 7 8 10 11
RIDGE WIND DIR..E E E E SE SE SE E N N
RIDGE WIND SPD..15 15 15 10 10 10 10 10 10 10
MIX HGT (KFT)...0.5 0.5 1.0 1.0 2.0 2.0 2.5 2.5 2.5 1.5
TRANSP WIND DIR.SE SE SE SE SE S SW W W W
TRANSP WIND SPD.13 13 13 12 12 12 13 13 12 12
SDSPL KT-FT/10003 3 8 11 18 22 27 28 26 16
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........60 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......NORTH AROUND 10 MPH UNTIL 2200, THEN LIGHT
UNTIL 0200, THEN SOUTHEAST AROUND 10 MPH UNTIL
0400, THEN LIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 2000, THEN SOUTH 10 TO
12 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........65 65 65 60 55 50 50 50 50 50 45 45
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............40 38 35 35 35 35 35 35 35 33 32 30
RH..............43 47 50 52 53 53 51 49 47 46 45 45
20 FT WIND DIR..N N N NE NE NE E SE SE S S S
20 FT WIND SPD..5 5 4 3 2 1 2 2 3 3 2 2
20 FT WIND GUST.11 10 10 6 5 4 4 4 5 5 5 5
RIDGE WIND DIR..N N N NE NE NE E SE SE S S S
RIDGE WIND SPD..10 10 10 10 5 5 5 5 10 10 5 5
MIX HGT (KFT)...0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.1 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W S S S S S S S S S S
TRANSP WIND SPD.10 10 10 10 12 12 12 12 12 12 12 12
SDSPL KT-FT/10002 2 2 2 3 3 3 2 3 3 3 3
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....AROUND 44.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 15 MPH. GUSTS UP TO 23 MPH
INCREASING TO 28 MPH IN THE AFTERNOON.
RIDGETOP WIND.......WEST 15 TO 20 MPH UNTIL 1500, THEN AROUND 25
MPH.
MIXING HEIGHT.......1500 FT AGL AFTER 0700.
TRANSPORT WINDS.....SOUTH AROUND 16 MPH UNTIL 0900. NORTHWEST
AROUND 23 MPH AFTER 1600.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........55 65 70 70 70 70 75 80 85 85 85 85
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............31 32 32 35 39 41 43 43 43 43 42 42
RH..............47 47 47 46 46 47 51 55 60 63 65 67
20 FT WIND DIR..W SW SW SW W W W W W W W W
20 FT WIND SPD..9 9 9 10 11 12 13 13 14 15 15 15
20 FT WIND GUST.11 11 12 14 17 18 19 20 20 21 22 22
RIDGE WIND DIR..W SW SW SW W W W W W W W W
RIDGE WIND SPD..15 15 15 15 20 20 20 20 20 25 25 25
MIX HGT (KFT)...0.1 0.5 0.5 0.5 1.0 1.5 1.5 1.5 1.5 1.5 1.0 1.0
TRANSP WIND DIR.S S S W W W W W W NW NW NW
TRANSP WIND SPD.16 16 16 17 18 20 21 21 22 23 23 23
SDSPL KT-FT/10003 4 4 8 17 27 28 27 28 25 20 15
FORECAST DAYS 3 THROUGH 5
WEDNESDAY
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS IN
THE MID 30S. HIGHS IN THE MID 40S. WEST WINDS 40-50 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S. WEST-
NORTHWEST WINDS 30-35 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 40S. WEST
WINDS 30-35 MPH.
FORECASTER...LAVOIE
REQUESTED BY...CHRIS STURDEVANT
TYPE OF REQUEST...PRESCRIBED
.TAG 2603106.3/RIW
.DELDT 02/23/26
.FORMATTERVERSION 2.0.0
.EMAIL ROMAN@BLM.GOV,CSTURDEVANT@BLM.GOV
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