Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
965
FNUS75 KRIW 181332
FWSRIW
Spot Forecast for Salt Pass Rx...USFS-BTF-WZ
National Weather Service Riverton WY
632 AM MST Tue Nov 18 2025
Forecast is based on ignition time of 0900 MST on November 18.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Dry conditions for the day under partly cloudy skies and light
winds. Temperatures will push around 40 degrees this afternoon
giving way to minimum relative humidity values around 70 percent
and poor smoke dispersal. Increasing chances for rain showers
after 9PM becoming more likely by early Wednesday morning after
5AM. Chances remain much of the day (~60 percent) before
diminishing towards sunset and overnight into Thursday.
...Thunderstorms imply strong gusty and erratic winds...
.TODAY...
Sky/weather.........Partly sunny (55-65 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 40.
Min humidity........70 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southeast around 10 mph until 0900, then light
until 1000, then south around 10 mph.
Mixing height.......2500 ft AGL until 1400, then 3000 ft AGL until
1700, then 1000 ft AGL.
Transport winds.....South 7 to 10 mph.
Smoke dispersal.....Poor.
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........75 70 65 65 65 65 55 50 40
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0
Temp............33 36 39 39 40 40 39 37 36
RH..............81 77 73 72 71 70 74 78 82
20 FT wind dir..SE S S S S S S S SE
20 FT wind spd..2 3 4 5 4 5 3 3 3
20 FT wind gust.4 4 6 6 6 6 5 4 4
Ridge wind dir..SE S S S S S S S SE
Ridge wind spd..5 10 10 10 10 10 10 10 10
Mix hgt (kft)...1.5 1.5 2.0 2.5 2.5 3.0 2.5 1.5 1.0
Transp wind dir.SE S S S S S S S SE
Transp wind spd.7 8 9 10 10 10 8 8 8
SDspl kt-ft/10008 12 18 23 25 25 17 12 9
.TONIGHT...
Sky/weather.........Mostly cloudy (50-60 percent) then becoming
partly cloudy (45-55 percent) then becoming
mostly cloudy (65-75 percent). Slight chance of
rain showers and snow showers overnight. Chance
of rain showers and snow showers after 3 am,
then rain showers and snow showers likely early
in the morning.
CWR.................5 percent.
Chance of pcpn......60 percent.
Chance of thunder...1 percent.
Min temperature.....Around 29.
Max humidity........91 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southeast around 10 mph until 0500, then light.
Mixing height.......1000 ft AGL.
Transport winds.....Southeast 7 to 9 mph.
Smoke dispersal.....Poor.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........55 55 55 55 50 50 55 60 65 70 80 85
Weather cov..... SCH SCH CHC CHC LKY
Weather type.... RS RS RS RS RS
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 10
Chc of pcpn (%).0 0 0 10 10 10 10 20 20 30 30 60
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............34 33 32 32 32 32 31 31 31 31 30 30
RH..............84 83 82 81 80 80 80 80 80 82 84 86
20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE S
20 FT wind spd..3 3 4 4 4 4 4 4 4 4 3 2
20 FT wind gust.5 5 6 6 5 6 6 5 6 5 4 4
Ridge wind dir..SE SE SE SE SE SE SE SE SE SE SE S
Ridge wind spd..10 10 10 10 10 10 10 10 10 10 10 5
Mix hgt (kft)...1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Transp wind dir.SE SE SE SE SE SE S S S S S S
Transp wind spd.8 8 9 9 9 9 9 9 9 9 8 7
SDspl kt-ft/10007 9 10 10 10 10 10 10 10 10 9 8
.WEDNESDAY...
Sky/weather.........Mostly cloudy (70-80 percent). Rain showers and
snow showers likely in the morning, then chance
of rain showers and slight chance of snow
showers in the afternoon.
CWR.................5 percent.
Chance of pcpn......60 percent.
Chance of thunder...5 percent.
Max temperature.....Around 42.
Min humidity........81 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds until 0900, then south around 10
mph until 1700, then light.
Mixing height.......2500 ft AGL until 1400, then 3000 ft AGL.
Transport winds.....South 7 to 10 mph.
Smoke dispersal.....Poor.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........90 90 90 80 80 80 75 70 65 65 60 60
Weather cov.....LKY LKY LKY LKY LKY CHC CHC CHC CHC CHC CHC
Weather type....RS SW RS RS RS RW RW RW RW RW RW
Tstm cov........
CWR.............10 10 10 10 10 10 10 10 10 10 10 0
Chc of pcpn (%).60 60 60 60 60 50 50 50 50 50 50 10
Chc of thdr (%).0 0 0 0 0 0 0 0 10 10 10 0
Temp............29 30 31 35 37 39 40 41 41 41 39 37
RH..............88 90 91 90 89 88 84 80 78 81 85 89
20 FT wind dir..SE SE SE S S S S S S S S S
20 FT wind spd..2 2 2 3 4 5 5 5 4 3 3 2
20 FT wind gust.5 6 6 6 6 7 8 8 8 7 6 6
Ridge wind dir..SE SE SE S S S S S S S S S
Ridge wind spd..5 5 5 10 10 10 10 10 10 10 10 5
Mix hgt (kft)...1.0 1.0 1.0 1.5 2.0 2.5 2.5 2.5 3.0 2.5 2.0 1.5
Transp wind dir.SE SE S S S S S S S S S SE
Transp wind spd.7 7 7 8 9 10 10 10 9 8 8 7
SDspl kt-ft/10007 7 7 11 17 23 24 25 23 16 13 8
.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
Partly cloudy. Lows in the mid 20s. Highs in the mid 40s. Light
winds.
.FRIDAY...
Partly cloudy. Slight chance of snow showers. Lows in the mid
20s. Highs in the lower 40s. Light winds.
.SATURDAY...
Partly cloudy. Lows in the mid 20s. Highs in the lower 40s. Light
winds.
$$
Forecaster...Lowe
Requested by...Michael McEwen
Type of request...PRESCRIBED
.TAG 2526155.0/RIW
.DELDT 11/18/25
.FormatterVersion 2.0.0
.EMAIL michael.mcewen@usda.gov