Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
152
FNUS75 KRIW 201444
FWSRIW
Spot Forecast for Deadman Rx...USFS-BTF
National Weather Service Riverton WY
744 AM MST Thu Nov 20 2025
Forecast is based on ignition time of 0900 MST on November 20.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
There is a 10 to 15% chance of rain and snow showers this afternoon,
after 1400L. Otherwise, it remains dry. Winds remain light, less
than 8 mph, upslope/upvalley during the day, then becoming downslope/
downvalley after sunset. Winds remain light over the next several days.
Slight chances for occasional rain and snow showers will again be
possible on Friday afternoon, but chances generally remain less
than 15%. With the light winds expect smoke dispersal to be poor.
A slight warming and drying trend will continue through the
weekend.
...Thunderstorms imply strong gusty and erratic winds...
.REST OF TODAY...
Sky/weather.........Mostly sunny (40-50 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...0 percent.
Max temperature.....Around 44.
Min humidity........67 percent.
Wind (20 ft)........Light upslope/upvalley winds less than 5 mph.
Ridgetop wind.......Light winds.
Mixing height.......3500 ft AGL until 1300, then 4000 ft AGL until
1700, then 1500 ft AGL.
Transport winds.....Southeast around 7 mph until 1100, then light
east around 7 mph.
Smoke dispersal.....Poor.
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........40 40 40 45 45 50 45 45 40
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 10 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 0 0 0
Temp............30 35 39 42 43 43 39 37 34
RH..............88 78 73 70 76 73 79 85 85
20 FT wind dir..SE SE NE N N N N NE NE
20 FT wind spd..2 2 1 1 2 1 2 2 2
20 FT wind gust. 2
Ridge wind dir..SE SE NE N N N N NE NE
Ridge wind spd..5 5 5 5 5 5 5 5 5
Mix hgt (kft)...2.0 2.5 3.0 3.5 4.0 4.0 4.0 2.5 1.5
Transp wind dir.SE SE SE E E E E NE NE
Transp wind spd.7 7 6 6 7 6 7 7 7
SDspl kt-ft/100011 15 15 18 24 20 23 14 9
.TONIGHT...
Sky/weather.........Mostly cloudy (50-60 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...0 percent.
Min temperature.....Around 24.
Max humidity........93 percent.
Wind (20 ft)........Light downslope/downvalley winds less than
5 mph.
Ridgetop wind.......Light winds.
Mixing height.......1000 ft AGL.
Transport winds.....East around 7 mph until 0100, then light until
0500, then north around 7 mph.
Smoke dispersal.....Poor.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40 45 50 45 40 35 40 45 50 50 55 55
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 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............32 30 30 30 29 29 28 28 28 27 27 26
RH..............85 85 86 89 91 93 93 93 93 92 91 90
20 FT wind dir..E E E E E E E E NE N E SE
20 FT wind spd..2 2 2 2 2 2 1 1 1 1 1 2
20 FT wind gust. 4
Ridge wind dir..E E E E E E E E NE N E SE
Ridge wind spd..5 5 5 5 5 5 5 5 5 5 5 5
Mix hgt (kft)...1.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Transp wind dir.NE E E E E E E E E N NW N
Transp wind spd.7 7 7 7 7 7 7 6 6 6 6 7
SDspl kt-ft/10007 9 9 8 9 8 8 7 7 7 7 8
.FRIDAY...
Sky/weather.........Mostly sunny (40-50 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...0 percent.
Max temperature.....Around 43.
Min humidity........70 percent.
Wind (20 ft)........Light upslope/upvalley winds less than 7 mph.
Ridgetop wind.......Light winds until 1200, then northwest around
10 mph.
Mixing height.......3000 ft AGL.
Transport winds.....Light winds until 1000, then northwest around 7
mph until 1100, then southwest until 1200, then
west 8 to 9 mph.
Smoke dispersal.....Poor.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........55 50 45 30 35 40 35 35 30 30 30 30
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............25 24 24 27 32 37 40 42 42 41 39 36
RH..............90 90 93 90 84 77 72 70 70 75 81 87
20 FT wind dir..SE NE N N NW NW NW W W W NW NW
20 FT wind spd..1 1 1 1 2 2 3 3 4 4 4 4
20 FT wind gust.4 4 4 4 4 5 6 6 7 7 7 7
Ridge wind dir..SE NE N N NW NW NW W W W NW NW
Ridge wind spd..5 5 5 5 5 5 10 10 10 10 10 10
Mix hgt (kft)...1.5 1.5 1.5 1.5 2.0 2.5 2.5 3.0 3.0 2.5 2.0 1.5
Transp wind dir.N N N NW NW SW W W NW NW W W
Transp wind spd.6 6 6 6 7 7 8 8 9 9 9 9
SDspl kt-ft/10007 7 7 8 12 15 19 21 25 20 16 11
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Partly cloudy. Lows in the lower 20s. Highs in the lower 40s.
Light winds.
.SUNDAY...
Mostly clear. Lows in the lower 20s. Highs in the mid 40s. Light
winds.
.MONDAY...
Mostly clear. Chance of snow showers. Lows in the lower 20s.
Highs around 40. Light winds.
$$
Forecaster...Hensley
Requested by...Michael McEwen
Type of request...PRESCRIBED
.TAG 2526419.0/RIW
.DELDT 11/20/25
.FormatterVersion 2.0.0
.EMAIL michael.mcewen@usda.gov