656
FNUS75 KRIW 101200
FWSRIW
SPOT FORECAST FOR SVF UNIT 1...USFS-BTF
NATIONAL WEATHER SERVICE RIVERTON WY
600 AM MDT TUE MAR 10 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON MARCH 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE
DISCUSSION
SLIGHT CHANCES FOR SNOW SHOWERS AFTER 11AM (<20%) WITH LITTLE TO
NO ACCUMULATIONS EXPECTED. MOSTLY CLOUDY SKIES WITH COOLER
TEMPERATURES AND HIGHER MINIMUM RELATIVE HUMIDITY VALUES IN THE
AFTERNOON. WINDS INCREASE THROUGHOUT THE DAY GUSTING UP TO 20 TO
25 MPH THROUGH NOON BEFORE PUSHING UP TO 30 TO 35 MPH THERE AFTER
DURING THE AFTERNOON HOURS THROUGH SUNSET. WINDS THEN SLOWLY
DECREASE BUT REMAIN ELEVATED 15 TO 20 MPH ALL OUT OF THE WEST
THROUGH THE OVERNIGHT HOURS. SMOKE DISPERSAL WILL BE VERY GOOD TO
EXCELLENT DUE TO THE GUSTY WINDS. LESS WIND AND SLIGHTLY WARMER
TEMPERATURES FOR WEDNESDAY.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
REST OF TODAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). SLIGHT CHANCE OF SNOW
SHOWERS LATE IN THE MORNING.
CWR.................3 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...2 PERCENT.
MAX TEMPERATURE.....AROUND 29.
MIN HUMIDITY........51 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 0900. WINDS WEST AROUND 18
MPH WITH GUSTS TO AROUND 28 MPH AFTER 1600.
RIDGETOP WIND.......WEST 15 TO 20 MPH UNTIL 1200, THEN 25 TO 30
MPH.
MIXING HEIGHT.......5500 FT AGL AFTER 1100.
TRANSPORT WINDS.....WEST 13 TO 20 MPH UNTIL 1100. 32 TO 35 MPH
AFTER 1500.
SMOKE DISPERSAL.....POOR UNTIL 0900. VERY GOOD EARLY IN THE MORNING
INCREASING TO EXCELLENT IN THE AFTERNOON AFTER
1300.
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........85 85 85 85 90 90 85 85 85 85
WEATHER COV..... SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... SW SW SW SW SW SW SW
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 10 10 20 20 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0
TEMP............28 28 28 28 29 28 28 28 27 26
RH..............70 71 68 65 62 59 57 54 53 52
20 FT WIND DIR..W W W W W W W W W W
20 FT WIND SPD..6 8 12 14 15 16 17 17 18 18
20 FT WIND GUST.10 13 18 20 23 24 26 26 28 28
RIDGE WIND DIR..W W W W W W W W W W
RIDGE WIND SPD..15 15 20 20 25 25 25 25 30 30
MIX HGT (KFT)...0.1 1.0 2.5 4.0 5.0 5.0 5.5 5.5 5.5 5.0
TRANSP WIND DIR.W W W W W W W W W W
TRANSP WIND SPD.13 15 20 24 29 31 32 35 33 32
SDSPL KT-FT/10002 14 46 82 121 140 154 169 153 141
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
PARTLY CLOUDY (30-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
MIN TEMPERATURE.....AROUND 16.
MAX HUMIDITY........70 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 18 MPH WITH GUSTS TO AROUND 28
MPH UNTIL 0200. LIGHT AFTER 0300.
RIDGETOP WIND.......WEST 25 TO 30 MPH UNTIL 2100. AROUND 10 MPH
AFTER 0300.
MIXING HEIGHT.......4000 FT AGL UNTIL 2000.
TRANSPORT WINDS.....WEST 21 TO 30 MPH UNTIL 2400. AROUND 10 MPH
AFTER 0400.
SMOKE DISPERSAL.....VERY GOOD EARLY IN THE EVENING DECREASING TO
GOOD LATE IN THE NIGHT UNTIL 2000, THEN GOOD
EARLY IN THE EVENING DECREASING TO FAIR LATE IN
THE NIGHT UNTIL 2200, THEN POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........80 75 75 70 65 55 50 40 30 25 25 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 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............25 24 23 21 21 20 20 19 18 18 17 16
RH..............51 53 55 58 60 61 63 65 66 67 68 69
20 FT WIND DIR..W W W W W W W W W W W SW
20 FT WIND SPD..18 17 16 14 14 13 10 9 7 6 5 5
20 FT WIND GUST.28 25 23 21 20 19 16 14 11 10 7 6
RIDGE WIND DIR..W W W W W W W W W W W SW
RIDGE WIND SPD..30 25 25 20 20 20 15 15 15 10 10 10
MIX HGT (KFT)...4.5 4.0 2.5 2.0 0.5 1.0 1.5 1.0 1.0 0.5 0.5 0.1
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.30 26 26 23 23 21 20 17 15 12 10 10
SDSPL KT-FT/1000122 98 61 42 14 17 24 16 10 3 3 2
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (65-75 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 32.
MIN HUMIDITY........47 PERCENT.
WIND (20 FT)........LIGHT WINDS UNTIL 1100, THEN WEST 8 TO 12 MPH
WITH GUSTS TO AROUND 18 MPH.
RIDGETOP WIND.......WEST 10 TO 15 MPH UNTIL 1400, THEN AROUND 20
MPH.
MIXING HEIGHT.......5000 FT AGL AFTER 1400.
TRANSPORT WINDS.....WEST 9 TO 17 MPH UNTIL 1200, THEN 21 TO 24 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000. GOOD EARLY IN THE MORNING
INCREASING TO VERY GOOD IN THE AFTERNOON AFTER
1200.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........20 20 25 25 25 25 25 35 45 55 60 70
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 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............16 17 17 18 21 23 26 28 30 32 32 31
RH..............70 69 68 67 63 58 54 52 49 47 50 54
20 FT WIND DIR..SW SW SW W W W W W W W W W
20 FT WIND SPD..5 4 3 5 6 8 9 10 11 11 12 12
20 FT WIND GUST.6 6 4 7 10 12 14 16 16 17 18 18
RIDGE WIND DIR..SW SW SW W W W W W W W W W
RIDGE WIND SPD..10 10 10 10 15 15 15 15 20 20 20 20
MIX HGT (KFT)...0.1 0.1 0.1 0.5 1.5 2.5 4.0 4.0 4.5 5.0 4.5 4.0
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.10 10 9 12 14 17 21 22 23 24 24 23
SDSPL KT-FT/10001 2 2 5 17 40 69 79 90 101 94 83
FORECAST DAYS 3 THROUGH 5
THURSDAY
MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LOWS IN THE MID 20S.
HIGHS IN THE UPPER 30S. SOUTHWEST WINDS AROUND 14 MPH.
FRIDAY
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. LOWS IN THE LOWER 30S.
HIGHS IN THE MID 40S. WEST WINDS AROUND 14 MPH.
SATURDAY
MOSTLY CLOUDY WITH SHOWERS AND SNOW SHOWERS. LOWS IN THE MID 30S.
HIGHS IN THE UPPER 30S. WEST WINDS AROUND 14 MPH.
FORECASTER...LOWE
REQUESTED BY...MICHAEL MCEWEN
TYPE OF REQUEST...PRESCRIBED
.TAG 2604966.1/RIW
.DELDT 03/10/26
.FORMATTERVERSION 2.0.0
.EMAIL MICHAEL.MCEWEN@USDA.GOV
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