Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
004
FNUS75 KRIW 032111
FWSRIW
Spot Forecast for Jacobs Creek...BLM
National Weather Service Riverton WY
211 PM MST Wed Dec 3 2025
Forecast is based on ignition time of 0900 MST on December 04.
If conditions become unrepresentative, contact the National Weather
Service
.DISCUSSION...
Mainly quiet and dry conditions across the area for Thursday. Skies
will be partly to mostly clear with clouds increasing by the afternoon
and evening. Winds are forecast to be light (<10 mph) from the
northwest/west through much of the day with periodic gusts around
15 mph. Temperatures look to be in the mid 20s to near 30s for
much of Thursday. Min RH will be well above critical values with
percents around 55 to 60%.
...Thunderstorms imply strong gusty and erratic winds...
.THURSDAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...0 percent.
Max temperature.....Around 30.
Min humidity........57 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Northwest 10 to 15 mph.
Mixing height.......2000 ft AGL.
Transport winds.....Northwest 10 to 15 mph.
Smoke dispersal.....Poor.
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30 25 15 20 20 25 30 35 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 10 10
Chc of thdr (%).0 0 0 0 0 0 0 0 0
Temp............21 24 27 28 29 30 28 27 26
RH..............60 59 58 58 57 57 59 61 63
20 FT wind dir..NW NW W W W W W NW NW
20 FT wind spd..5 6 6 6 6 6 6 6 6
20 FT wind gust.7 8 10 10 10 10 8 8 10
Ridge wind dir..NW NW W W W W W NW NW
Ridge wind spd..10 10 15 15 15 15 10 10 10
Mix hgt (kft)...1.0 1.5 1.5 2.0 2.0 2.0 1.5 1.0 0.5
Transp wind dir.N NW NW NW NW NW NW NW N
Transp wind spd.10 12 13 14 15 13 13 12 12
SDspl kt-ft/10008 14 19 22 25 21 15 8 7
.THURSDAY NIGHT...
Sky/weather.........Mostly cloudy (65-75 percent). Slight chance of
snow showers late in the evening.
CWR.................2 percent.
Chance of pcpn......20 percent.
Chance of thunder...0 percent.
Min temperature.....Around 21.
Max humidity........74 percent.
Wind (20 ft)........Light winds until 1900, then northwest around 7
mph until 0300, then light.
Ridgetop wind.......Northwest 10 to 15 mph.
Mixing height.......500 ft AGL.
Transport winds.....Northwest 12 to 14 mph.
Smoke dispersal.....Poor.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........65 65 65 75 75 75 75 70 70 70 65 65
Weather cov..... SCH SCH SCH SCH SCH SCH
Weather type.... SW SW SW SW SW SW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 10 10 10 10 20 20 20 20 20 20 10
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............25 25 25 25 25 25 25 25 24 24 23 22
RH..............63 63 64 66 66 66 67 68 70 71 72 73
20 FT wind dir..N NW NW NW NW NW NW NW NW NW W W
20 FT wind spd..6 7 7 7 7 7 7 7 7 6 6 6
20 FT wind gust.10 10 11 11 10 10 10 10 10 8 8 7
Ridge wind dir..N NW NW NW NW NW NW NW NW NW W W
Ridge wind spd..15 15 15 15 15 15 15 15 15 15 15 10
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.N N NW N N NW NW NW NW NW NW NW
Transp wind spd.13 14 14 14 14 14 14 14 14 13 13 12
SDspl kt-ft/10007 8 8 8 8 8 8 9 9 8 8 7
.FRIDAY...
Sky/weather.........Partly sunny (60-70 percent). Slight chance of
snow showers late in the afternoon.
CWR.................4 percent.
Chance of pcpn......20 percent.
Chance of thunder...2 percent.
Max temperature.....Around 28.
Min humidity........68 percent.
Wind (20 ft)........Light winds. Gusts up to 14 mph in the late
morning and afternoon.
Ridgetop wind.......West 10 to 15 mph.
Mixing height.......2000 ft AGL.
Transport winds.....Northwest 10 to 13 mph until 1500. Southwest
around 13 mph after 1700.
Smoke dispersal.....Poor.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........65 65 65 60 55 45 55 60 70 70 75 80
Weather cov..... SCH
Weather type.... SW
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 20
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............22 21 22 23 25 26 27 28 28 27 26 26
RH..............74 74 74 73 72 71 71 72 73 74 75 75
20 FT wind dir..W W W W W W W W W W W W
20 FT wind spd..6 5 5 5 5 5 6 6 6 6 6 6
20 FT wind gust.7 7 7 8 8 10 10 10 11 11 11 11
Ridge wind dir..W W W W W W W W W W W W
Ridge wind spd..10 10 10 10 10 10 10 10 15 15 15 15
Mix hgt (kft)...0.5 1.0 1.0 1.0 1.5 2.0 2.0 1.5 1.5 1.5 1.0 0.5
Transp wind dir.NW NW NW NW NW NW NW NW W W SW SW
Transp wind spd.12 10 10 10 10 12 12 12 13 13 13 13
SDspl kt-ft/10007 7 7 10 14 18 18 17 18 14 10 7
.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Mostly cloudy with chance of snow showers. Lows in the lower 20s.
Highs in the upper 20s. West winds around 7 mph.
.SUNDAY...
Partly cloudy. Slight chance of snow showers. Lows around 20.
Highs around 30. West winds around 7 mph.
.MONDAY...
Partly cloudy. Lows in the mid 20s. Highs in the mid 30s.
Northwest winds around 9 mph.
$$
Forecaster...Dziewaltowski
Requested by...Carson Mountford
Type of request...PRESCRIBED
.TAG 2526870.0/RIW
.DELDT 12/03/25
.FormatterVersion 2.0.0
.EMAIL cmountford@blm.gov