Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
943
FNUS75 KRIW 191313
FWSRIW
Spot Forecast for Salt Pass Rx...USFS-BTF-WZ
National Weather Service Riverton WY
613 AM MST Wed Nov 19 2025
Forecast is based on ignition time of 0800 MST on November 19.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Small chances for some rain showers this morning through noon
(20-30%) before better chances in the afternoon through sunset
(>60%). Light accumulations expected (<.1 inch). Otherwise,
mostly cloudy skies all day becoming partly cloudy after midnight
tonight and into Thursday morning. Light winds expected out of the
south less than 10 mph all day and overnight into Thursday as
well. Temperatures on the cooler side once again hovering near the
40 degree mark, giving way to minimum relative humidity values in
the 70 to 80 percent range. Smoke dispersal poor through the day
due to the light winds and rain shower activity.
...Thunderstorms imply strong gusty and erratic winds...
.REST OF TODAY...
Sky/weather.........Mostly cloudy (75-85 percent). Chance of rain
showers early in the morning. Rain showers likely in
the afternoon.
CWR.................4 percent.
Chance of pcpn......60 percent.
Chance of thunder...8 percent.
Max temperature.....Around 40.
Min humidity........79 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......South around 10 mph.
Mixing height.......2500 ft AGL until 1300, then 3000 ft AGL until
1700, then 1000 ft AGL.
Transport winds.....South 8 to 12 mph.
Smoke dispersal.....Poor.
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........75 75 75 75 75 80 80 80 80 80
Weather cov.....CHC SCH CHC CHC CHC CHC CHC CHC LKY CHC
Weather type....RS RS RS RS RS RW RW RW RW RW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).30 20 30 30 50 50 50 50 60 40
Chc of thdr (%).0 0 0 10 10 10 10 10 10 0
Temp............34 35 37 39 40 40 40 39 38 37
RH..............90 87 83 80 80 80 79 83 87 91
20 FT wind dir..SE S S S S S S S S SE
20 FT wind spd..4 4 5 6 6 6 5 4 4 4
20 FT wind gust.6 6 7 8 8 7 6 6 6 6
Ridge wind dir..SE S S S S S S S S SE
Ridge wind spd..10 10 10 10 10 10 10 10 10 10
Mix hgt (kft)...1.0 1.5 2.0 2.5 2.5 3.0 3.0 3.0 2.0 1.0
Transp wind dir.S S S S S S S S S SE
Transp wind spd.8 9 10 12 10 10 10 9 9 9
SDspl kt-ft/10009 12 17 23 25 27 27 22 17 10
.TONIGHT...
Sky/weather.........Mostly cloudy (60-70 percent) then becoming
partly cloudy (40-50 percent). Chance of rain
showers in the evening, then
slight chance of rain showers overnight.
CWR.................0 percent.
Chance of pcpn......30 percent.
Chance of thunder...1 percent.
Min temperature.....Around 27.
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 8 to 9 mph.
Smoke dispersal.....Poor.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........70 70 65 60 55 55 50 45 40 40 40 45
Weather cov.....CHC CHC CHC SCH SCH SCH SCH SCH
Weather type....RW RW RS RS RS RS RS RS
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).30 30 30 20 20 20 20 10 10 10 10 20
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............36 36 35 35 35 34 34 33 33 31 30 28
RH..............90 89 88 88 88 87 87 88 88 88 88 88
20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT wind spd..4 3 4 4 4 4 4 4 4 4 3 2
20 FT wind gust.6 5 5 5 6 6 5 5 5 5 4 5
Ridge wind dir..SE SE SE SE SE SE SE SE SE SE SE SE
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 S S SE SE SE S S SE SE SE E
Transp wind spd.9 8 9 9 9 9 9 9 9 9 8 8
SDspl kt-ft/10009 9 10 10 10 10 12 10 10 10 9 9
.THURSDAY...
Sky/weather.........Mostly sunny (35-45 percent). Slight chance of
rain showers in the morning. Chance of rain
showers through the day.
CWR.................0 percent.
Chance of pcpn......30 percent.
Chance of thunder...0 percent.
Max temperature.....Around 44.
Min humidity........68 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Light winds until 1000, then east around 10 mph
until 1300, then light.
Mixing height.......2500 ft AGL until 1100, then 3500 ft AGL until
1700, then 1000 ft AGL.
Transport winds.....East 7 to 8 mph.
Smoke dispersal.....Poor.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........55 40 35 25 35 45 50 50 55 55 55 55
Weather cov.....SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC SCH
Weather type....RS SW RS RS RS RW RW RW RW RW RW RW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).20 20 20 20 20 30 30 30 30 30 30 20
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............27 27 28 33 37 40 42 44 44 43 41 39
RH..............86 90 88 86 82 77 72 69 68 71 77 82
20 FT wind dir..E E E E E E E E E E E NE
20 FT wind spd..2 2 2 2 3 3 3 2 2 2 2 2
20 FT wind gust.5 5 5 5 6 6 6 7 7 7 6 6
Ridge wind dir..E E E E E E E E E E E NE
Ridge wind spd..5 5 5 5 10 10 10 5 5 5 5 5
Mix hgt (kft)...1.0 1.0 1.0 1.5 2.5 3.0 3.0 3.5 3.5 3.0 2.0 1.0
Transp wind dir.E E E SE SE E SE SE SE SE E E
Transp wind spd.8 7 7 7 8 8 8 7 7 7 7 7
SDspl kt-ft/10008 7 7 9 16 21 23 21 22 17 12 7
.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Partly cloudy. Slight chance of showers and snow showers. Lows in
the upper 20s. Highs in the lower 40s. Light winds.
.SATURDAY...
Partly cloudy. Lows in the mid 20s. Highs in the lower 40s. Light
winds.
.SUNDAY...
Partly cloudy. Lows in the mid 20s. Highs in the mid 40s. Light
winds.
$$
Forecaster...Lowe
Requested by...Michael McEwen
Type of request...PRESCRIBED
.TAG 2526155.1/RIW
.DELDT 11/19/25
.FormatterVersion 2.0.0
.EMAIL michael.mcewen@usda.gov