528
FNUS75 KRIW 121138
FWSRIW
SPOT FORECAST FOR CFO PROGRAMMATIC SLASH PILE BURN...BLM
NATIONAL WEATHER SERVICE RIVERTON WY
438 AM MST THU FEB 12 2026
FORECAST IS BASED ON IGNITION TIME OF 0500 MST ON FEBRUARY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
DRY CONDITIONS EXPECTED TODAY WITH MOSTLY CLOUDY SKIES BECOMING
PARTLY CLOUDY AND SOME SUNSHINE AFTER 1PM. A BIT WARMER
TEMPERATURES THIS AFTERNOON WILL DROP MINIMUM RELATIVELY HUMIDITY
VALUES INTO THE 40 TO 45 PERCENT RANGE. OTHERWISE, SOUTHERLY WINDS
LESS 10 MPH THIS MORNING BECOMING 10 TO 20 MPH OUT OF THE WEST
AFTER NOON. WINDS DIMINISH AFTER SUNSET AROUND 6-7PM BECOMING LESS
THAN 10 MPH ONCE AGAIN AND THROUGH THE OVERNIGHT HOURS. AS SUCH,
SMOKE DISPERSAL WILL BE POOR THIS MORNING BECOMING FAIR IN THE
AFTERNOON WITH THE STRONGER WINDS AND MIXING PRESENT.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
TODAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........43 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1100, THEN SOUTHWEST 7 TO 8
MPH. GUSTS UP TO 18 MPH INCREASING TO 21 MPH IN
THE AFTERNOON.
RIDGETOP WIND.......SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......2500 FT AGL UNTIL 1100, THEN 4500 FT AGL UNTIL
1300, THEN 5500 FT AGL UNTIL 1700, THEN 2500 FT
AGL.
TRANSPORT WINDS.....WEST 12 TO 21 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN FAIR UNTIL 1200, THEN
GOOD UNTIL 1700, THEN POOR.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........55 60 60 65 60 60 60 40 40 45 55 45
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 10 10 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............34 34 35 39 43 45 48 49 51 52 52 51
RH..............77 78 81 75 67 61 58 53 46 44 43 43
20 FT WIND DIR..S S S SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..5 5 5 5 6 8 8 8 8 8 8 7
20 FT WIND GUST.10 8 10 10 12 14 14 16 17 17 16 14
RIDGE WIND DIR..S S S SW SW SW SW SW SW SW SW SW
RIDGE WIND SPD..10 10 10 10 15 15 15 15 15 15 15 15
MIX HGT (KFT)...1.0 1.0 1.0 1.5 2.5 3.0 4.5 5.0 5.5 5.0 5.0 2.5
TRANSP WIND DIR.SW SW SW W SW W W W W W W W
TRANSP WIND SPD.12 13 12 13 14 15 17 20 21 20 20 16
SDSPL KT-FT/100010 11 11 17 28 41 65 88 99 84 84 35
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 32.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 13 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........50 45 35 40 45 35 30 40 40 40 45 55
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 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............48 46 42 41 40 38 38 37 36 35 34 34
RH..............53 59 63 64 67 67 70 73 74 71 73 73
20 FT WIND DIR..SW SW SW SW SW SW S SW S S S S
20 FT WIND SPD..6 6 5 5 5 5 5 5 5 5 5 5
20 FT WIND GUST.12 11 10 10 10 10 10 10 10 10 10 10
RIDGE WIND DIR..SW SW SW SW SW SW S SW S S S S
RIDGE WIND SPD..15 10 10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
TRANSP WIND DIR.SW SW SW SW SW S S S S S S S
TRANSP WIND SPD.13 13 12 10 12 10 10 10 12 12 10 10
SDSPL KT-FT/100013 12 10 9 10 9 9 9 10 10 9 9
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING
SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........34 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1000, THEN SOUTHWEST 7 TO 9
MPH WITH GUSTS TO AROUND 18 MPH.
RIDGETOP WIND.......SOUTHWEST 10 TO 15 MPH.
MIXING HEIGHT.......2500 FT AGL UNTIL 1100, THEN 4000 FT AGL UNTIL
1400, THEN 5000 FT AGL UNTIL 1700, THEN 3000 FT
AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 18 MPH UNTIL 1300, THEN 15 TO
20 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN FAIR UNTIL 1300, THEN
FAIR EARLY IN THE MORNING INCREASING TO GOOD IN
THE AFTERNOON UNTIL 1700, THEN POOR.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........70 70 70 65 60 55 45 35 25 25 20 20
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............33 33 34 38 42 46 49 51 52 52 52 50
RH..............75 77 76 71 64 56 49 44 39 35 33 34
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..5 5 6 6 8 9 9 9 9 9 8 7
20 FT WIND GUST.10 10 11 13 14 17 18 18 17 16 14 13
RIDGE WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
RIDGE WIND SPD..10 10 10 15 15 15 15 15 15 15 15 15
MIX HGT (KFT)...1.0 1.0 1.0 2.0 2.5 3.0 3.5 4.0 5.0 4.0 3.5 3.0
TRANSP WIND DIR.S SW SW SW SW SW SW W W W SW SW
TRANSP WIND SPD.10 10 12 14 16 18 18 20 20 18 16 15
SDSPL KT-FT/10009 10 12 21 34 50 59 72 81 67 50 38
FORECAST DAYS 3 THROUGH 5
SATURDAY
MOSTLY CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER 50S.
SOUTHWEST WINDS AROUND 7 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE MID 50S.
SOUTHWEST WINDS AROUND 11 MPH.
WASHINGTONS BIRTHDAY
MOSTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.
SOUTHWEST WINDS AROUND 12 MPH.
FORECASTER...LOWE
REQUESTED BY...JON BISIAR
TYPE OF REQUEST...PRESCRIBED
.TAG 2602187.2/RIW
.DELDT 02/12/26
.FORMATTERVERSION 2.0.0
.EMAIL JBISIAR@BLM.GOV,MWIDIKER@BLM.GOV
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