Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
150
FNUS75 KRIW 271318
FWSRIW
Spot Forecast for GNA Road Side 1-27...USFS
National Weather Service Riverton WY
618 AM MST Tue Jan 27 2026
Forecast is based on ignition time of 0700 MST on January 27.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Wind will be westerly to start the day before becoming more
northwesterly by noon. Otherwise, early morning high clouds will
decrease leading to sunny skies through the rest of the day. Smoke
dispersal will be poor through the morning, briefly increasing to
fair through mid afternoon. Wind will decrease after sunset,
persisting out of the west through the night. Wednesday will be
similarly mild with continued gusty west winds. There will be a
low chance of light snow late Wednesday afternoon, but little to
no accumulation is expected.
.REST OF TODAY...
Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 32.
Min humidity........32 percent.
Wind (20 ft)........West around 11 mph with gusts to 17 mph until
1000, then transitioning to northwest around
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......Increasing to 3000 ft AGL by 1300.
Transport winds.....West around 20 mph transitioning to northwest
after 1200.
Smoke dispersal.....Poor increasing to fair after 1300. Decreasing
to poor after 1600.
TIME (MST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25 20 15 10 5 5 5 5 5 5 5
Weather cov.....
Weather type....
Tstm cov........
CWR.............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
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0
Temp............17 15 20 25 30 31 31 32 30 27 25
RH..............44 46 41 37 32 33 33 33 36 38 41
20 FT wind dir..W W W WNW WNW NW NW NW NW W W
20 FT wind spd..11 11 11 10 10 9 9 9 9 7 6
20 FT wind gust.17 17 16 16 14 14 14 14 14 12 10
Ridge wind dir..W W W W W W W NW NW W W
Ridge wind spd..15 20 20 15 15 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 1.0 1.0 2.0 2.0 3.0 3.0 2.5 1.5 0.5
Transp wind dir.W W W W W NW NW NW NW NW W
Transp wind spd.21 20 18 17 20 20 20 20 20 15 14
SDspl kt-ft/10009 9 12 17 34 37 47 50 42 17 7
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent) then becoming
mostly cloudy (55-65 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 16.
Max humidity........57 percent.
Wind (20 ft)........West 6 to 11 mph with gusts to around 15 mph.
Ridgetop wind.......West 15 to 20 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 13 to 20 mph.
Smoke dispersal.....Poor.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........10 15 15 20 25 30 35 40 50 55 60 65
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 (%).M M M M M M M M M M M M
Temp............23 21 18 18 17 16 16 17 17 17 16 16
RH..............46 50 53 54 54 54 55 56 57 52 46 41
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..6 6 6 6 7 9 9 10 11 11 9 8
20 FT wind gust.10 10 10 10 11 13 14 14 17 16 14 13
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..15 15 15 15 15 15 15 15 20 20 15 15
Mix hgt (kft)...0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W NW W W W W W W W W W W
Transp wind spd.13 13 13 13 14 16 16 17 18 20 20 17
SDspl kt-ft/10006 6 6 6 6 7 7 8 8 9 9 8
.WEDNESDAY...
Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of
snow showers late in the afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Chance of thunder...0 percent.
Max temperature.....Around 35.
Min humidity........28 percent.
Wind (20 ft)........West around 7 mph with gusts to around 17 mph.
Ridgetop wind.......West around 15 mph.
Mixing height.......Increasing to 2000 ft AGL by 1300.
Transport winds.....West 18 to 24 mph.
Smoke dispersal.....Poor briefly increasing to fair around 1400.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........75 85 85 80 75 70 75 75 75 80 85 85
Weather cov..... SCH
Weather type.... SW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 10 10 10 10 10 10 20
Chc of thdr (%).M M M M M 0 0 0 0 0 0 0
Temp............19 19 20 26 30 32 34 35 34 32 30 28
RH..............39 37 36 32 30 29 30 32 35 39 43 47
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..7 7 7 7 6 6 6 7 7 7 6 6
20 FT wind gust.14 14 14 14 14 14 14 16 17 17 17 17
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..15 15 15 15 15 15 15 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 0.5 1.0 1.0 1.0 1.5 2.0 2.0 2.0 1.5 1.0
Transp wind dir.W W W W W W W W W W W W
Transp wind spd.18 20 20 20 20 20 21 23 24 23 23 22
SDspl kt-ft/10009 9 10 13 17 20 27 37 46 37 30 22
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
Partly cloudy. Slight chance of snow showers. Lows around 11.
Highs in the mid 30s. Northwest winds 5 to 10 mph with gusts to
15 mph.
.FRIDAY...
Partly cloudy. Lows around 13. Highs in the upper 30s. Light
winds. West winds 5 to 10 mph with gusts to 15 mph.
.SATURDAY...
Partly cloudy. Lows around 20. Highs in the lower 40s. Northwest
winds 5 to 10 mph with gusts to 15 mph.
$$
Forecaster...Myers
Requested by...Blake Davison
Type of request...PRESCRIBED
.TAG 2601098.0/RIW
.DELDT 01/27/26
.FormatterVersion 2.0.0
.EMAIL blake.davison@usda.gov