Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
311
FNUS75 KTFX 091151
FWSTFX
Spot Forecast for Judith Peak RX...BLM
National Weather Service Great Falls MT
451 AM MST Tue Dec 9 2025
Forecast is based on ignition time of 0700 MST on December 09.
If conditions become unrepresentative...contact the National Weather
Service.
...HIGH WIND WARNING IN EFFECT UNTIL 3 PM MST THIS AFTERNOON...
.DISCUSSION...
Periods of strong winds through early this afternoon. Chance for
rain/snow showers later today. Scattered rain/snow showers
continue through Wednesday. A better chance for all snow and
colder temperatures Thu into Friday.
.REST OF TODAY...
Sky/weather.........Mostly cloudy (70-80 percent) then becoming
mostly sunny (35-45 percent). Rain likely in
the morning. Chance of snow through the day.
CWR.................40 percent decreasing to 0 percent.
Max temperature.....41-46.
Min humidity........65-70 percent.
Wind (20 ft)........
Slope/valley.......Very windy. West winds around 40 mph with gusts
to around 65 mph becoming northwest around 20
mph with gusts to around 40 mph.
Mixing height.......3000 ft AGL.
Transport winds.....Northwest 35 to 40 mph decreasing to 25 to 30
mph late in the afternoon.
TIME (MST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........90 91 91 90 88 81 79 66 56 48 34
Weather cov.....CHC LKY CHC CHC CHC CHC SCH SCH
Weather type....RN RN RS SN SN SN SN SN
Tstm cov........
CWR.............40 40 40 40 20 20 20 20 20 20 0
Temp............43 41 39 40 34 34 33 31 30 30 28
RH..............67 67 96 98 100 95 90 89 86 85 82
20 FT wind dir..W W W NW NW NW NW NW NW NW W
20 FT wind spd..40 40 30 30 20 20 20 20 20 20 20
20 FT wind gust.60 65 55 45 40 35 35 35 35 30 30
Mix hgt (kft)...0.1 0.1 1.5 1.5 2.0 2.0 3.0 3.0 2.0 1.5 0.5
Transp wind dir.W W NW NW NW NW NW NW NW NW W
Transp wind spd.40 40 40 35 40 35 40 40 35 30 25
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent) then becoming
mostly cloudy (70-80 percent). Slight chance of
snow after 3 am. Snow early in the morning.
CWR.................0 percent increasing to 85 percent.
Min temperature.....23-28.
Max humidity........95-100 percent.
Wind (20 ft)........
Slope/valley.......West winds 15 to 20 mph decreasing to around 10
mph late in the evening, then shifting to the
south after 3 am.
Mixing height.......0 ft AGL.
Transport winds.....Northwest 20 to 25 mph becoming west 10 to 15
mph late in the evening, then shifting to the
south after 3 am.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........34 18 24 29 39 58 64 82 92 94 95 96
Weather cov..... SCH SCH DEF
Weather type.... SN SN SN
Tstm cov........
CWR.............0 0 0 0 0 10 10 10 10 10 10 90
Temp............28 28 28 28 28 27 26 27 26 27 27 27
RH..............79 76 72 72 71 69 70 68 68 85 85 85
20 FT wind dir..W W W W W W W W W S S S
20 FT wind spd..20 20 15 15 15 10 10 10 10 10 10 15
20 FT wind gust.30 30 30 25 25 20 20 15 15 20 20 20
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.NW NW NW NW W W W W W SW S S
Transp wind spd.25 25 25 25 20 15 15 15 10 10 10 15
.WEDNESDAY...
Sky/weather.........Cloudy (85-95 percent). Rain and snow in the
morning, then rain likely in the afternoon.
CWR.................85 percent decreasing to 30 percent late in the
morning, then increasing to 55 percent late in
the afternoon.
Max temperature.....38-43.
Min humidity........80-85 percent.
Wind (20 ft)........
Slope/valley.......Southwest winds around 15 mph with gusts to
around 30 mph shifting to the west with gusts
to around 35 mph late in the afternoon.
Mixing height.......1500 ft AGL.
Transport winds.....Southwest 15 to 20 mph shifting to the west
around 25 mph late in the morning, then
increasing to 35 to 40 mph in the afternoon
decreasing to around 30 mph late in the
afternoon.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........96 96 96 96 96 85 85 85 83 83 83 86
Weather cov.....DEF DEF DEF DEF DEF CHC CHC CHC CHC CHC CHC LKY
Weather type....SN SN SN SN RS RN RN RN RN RN RN RN
Tstm cov........
CWR.............90 90 90 90 90 30 30 30 30 30 30 60
Temp............28 28 29 30 31 34 36 38 39 39 39 39
RH..............85 90 96 98 100 100 100 99 96 95 94 93
20 FT wind dir..S S S S SW SW SW SW W W W W
20 FT wind spd..15 15 15 15 15 15 15 15 20 20 20 20
20 FT wind gust.25 25 25 25 25 30 30 30 35 35 35 35
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.5 0.5 1.0 1.0 1.5 1.0 1.0 0.5
Transp wind dir.S S SW SW W W W W W W W W
Transp wind spd.15 20 20 20 25 25 35 35 40 35 35 30
$$
Forecaster...Brusda
Requested by...Case Parker
Type of request...PRESCRIBED
.TAG 2527105.1/TFX
.DELDT 12/09/25
.FormatterVersion 2.0.0
.EMAIL cparker@blm.gov