232
FNUS75 KTFX 012317
FWSTFX

Spot Forecast for sun canyon hand piles...USFS
National Weather Service Great Falls MT
417 PM MST Mon Dec 1 2025

Forecast is based on ignition time of 0800 MST on December 02.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

An upper level disturbance will bring a few periods of snow and
snow showers to the area Tuesday. The best period for steadier
accumulating snow will be between 1000-1500, with 1 to 2 inches
expected in snow accumulations. West winds will be breezy in the
morning, shifting to the northwest during Tuesday afternoon. Snow
winds down early Wednesday morning.

.TUESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Snow.
CWR.................10 percent.
Chance of thunder...3 percent.
Max temperature.....31-36.
Min humidity........69-74 percent.
Wind (20 ft)........
 Slope/valley.......West winds 5 to 10 mph.
Mixing height.......2500 ft AGL.
Transport winds.....West 15 to 20 mph shifting to the northwest
                    around 10 mph late in the afternoon.

TIME (MST)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........80  86  88  92  89  91  92  90  86  89
Weather cov.....LKY DEF DEF DEF DEF DEF DEF LKY LKY CHC
Weather type....SN  SN  SN  SN  SN  SN  SN  SN  SN  SN
Tstm cov........
CWR.............10  10  10  10  10  10  10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0
Temp............25  25  27  30  31  32  33  32  32  31
RH..............76  81  78  76  76  74  74  74  74  74
20 FT wind dir..W   W   W   W   W   W   W   W   W   W
20 FT wind spd..10  10  10  10  10  10  5   5   5   5
20 FT wind gust.20  20  15  15  15  15  15  15  10  10
Mix hgt (kft)...1.5 2.0 2.0 2.5 2.5 2.5 2.5 2.5 2.0 1.5
Transp wind dir.W   W   W   W   W   W   W   NW  NW  NW
Transp wind spd.20  20  20  15  15  15  15  15  10  10

.TUESDAY NIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Chance of snow
                    in the evening, then snow likely late in the
                    evening. Slight chance of snow early in the
                    morning.
CWR.................10 percent decreasing to 5 percent late in the
                    evening.
Chance of thunder...0 percent.
Min temperature.....14-19.
Max humidity........79-84 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming west around 5 mph early in
                    the morning.
Mixing height.......1500 ft AGL.
Transport winds.....West 5 to 10 mph increasing to around 15 mph
                    early in the morning.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........86  93  84  81  81  80  80  80  74  74  74  51
Weather cov.....CHC CHC CHC CHC CHC LKY LKY LKY LKY LKY LKY SCH
Weather type....SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN
Tstm cov........
CWR.............10  10  10  10  10  0   0   0   0   0   0   10
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............29  28  27  27  26  25  24  24  23  22  20  19
RH..............76  77  76  76  78  77  76  74  74  76  78  80
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..0   0   0   0   0   0   0   0   0   0   0   5
20 FT wind gust.10  10  10  10  10  10  10  10  5   5   5   10
Mix hgt (kft)...1.5 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.W   W   NW  W   W   W   W   W   W   W   W   W
Transp wind spd.10  10  10  10  10  10  5   5   5   10  10  15

.WEDNESDAY...

Sky/weather.........Mostly sunny (35-45 percent). Slight chance of
                    snow in the morning.
CWR.................5 percent.
Chance of thunder...0 percent.
Max temperature.....31-36.
Min humidity........57-62 percent.
Wind (20 ft)........
 Slope/valley.......West winds 5 to 10 mph increasing to around 15
                    mph late in the afternoon.
Mixing height.......2500 ft AGL.
Transport winds.....West 15 to 20 mph.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........51  51  43  43  43  20  20  20  34  34  34  64
Weather cov.....SCH SCH SCH SCH SCH
Weather type....SN  SN  SN  SN  SN
Tstm cov........
CWR.............10  10  10  10  10  0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............18  18  17  20  24  28  30  32  33  32  31  29
RH..............81  82  82  80  77  74  70  67  64  63  64  65
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..5   5   5   5   5   10  10  10  10  10  10  15
20 FT wind gust.10  10  15  15  15  15  15  15  20  20  20  25
Mix hgt (kft)...1.5 1.5 1.5 1.5 2.0 2.5 2.5 2.5 2.5 2.5 2.0 1.5
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.15  15  15  15  15  15  20  20  20  20  20  20

$$
Forecaster...Wilson
Requested by...Rory Hendrickson
Type of request...PRESCRIBED
.TAG 2526811.0/TFX
.DELDT 12/01/25
.FormatterVersion 2.0.0
.EMAIL Rory.Hendrickson@usda.gov, tfx.ops@noaa.gov