Spot Forecast
Issued by NWS Great Falls, MT

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FNUS75 KTFX 091417
FWSTFX

Spot Forecast for Mass Geis 25...USFS
National Weather Service Great Falls MT
Issued by National Weather Service Missoula MT
817 AM MDT Thu Oct 9 2025

Forecast is based on ignition time of 0800 MDT on October 09.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION

It will be mild today with light winds. Tonight there will be
good humidity recovery with winds of 10 mph. Tomorrow it will be
warm (well above seasonal averages) with winds of 5 to 10 mph in
the morning. Tomorrow afternoon winds will increase to 10 to 15
mph with wind gusts up to 25 mph.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....65-70.
Min humidity........19-24 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds around 5 mph shifting to the
                    southeast in the late morning and afternoon.
Mixing height.......4500 ft AGL.
Transport winds.....Northeast around 5 mph shifting to the
                    southeast in the late morning and early
                    afternoon, then increasing to around 15 mph
                    late in the afternoon.

TIME (MDT)      2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Sky (%).........27  7   1   3   3   3   8   11  6   18
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0
Temp............40  44  54  59  64  65  66  67  65  64
RH..............49  49  37  31  27  25  25  26  27  29
20 FT wind dir..NE  NE  E   SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..5   5   5   5   5   10  10  10  10  10
20 FT wind gust.        10  10  15  15  20  20  20  20
Mix hgt (kft)...1.0 0.5 1.0 2.0 3.5 4.5 4.5 4.5 3.5 2.5
Transp wind dir.NE  E   E   SE  SE  SE  SE  SE  E   E
Transp wind spd.5   5   5   5   10  10  10  15  15  15

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....37-42.
Max humidity........62-67 percent.
Wind (20 ft)........
 Slope/valley.......East winds around 10 mph.
Mixing height.......1000 ft AGL.
Transport winds.....East 10 to 15 mph.

TIME (MDT)      12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P
Sky (%).........18  11  11  6   12  13  9   8   16  15  11  11
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............61  55  51  48  46  44  43  43  43  42  41  41
RH..............35  43  53  61  65  67  67  67  67  67  67  67
20 FT wind dir..E   E   E   E   E   E   E   E   E   E   E   E
20 FT wind spd..10  10  10  10  10  10  10  10  10  10  10  10
20 FT wind gust.20  20  20  20  20  20  20  15  15  15  15
Mix hgt (kft)...1.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Transp wind dir.E   E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.15  15  15  15  15  15  15  15  15  15  15  10

.FRIDAY...

Sky/weather.........Sunny (15-25 percent). Slight chance of rain
                    showers late in the morning.
CWR.................5 percent.
Chance of thunder...2 percent.
Max temperature.....70-75.
Min humidity........28-33 percent.
Wind (20 ft)........
 Slope/valley.......Southeast winds around 5 mph shifting to the
                    south 10 to 15 mph late in the morning.
Mixing height.......6500 ft AGL.
Transport winds.....Southeast around 10 mph shifting to the south
                    15 to 20 mph late in the morning.

TIME (MDT)      MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Sky (%).........11  32  27  35  14  25  15  15  15  6   6   6
Weather cov.....                    SCH
Weather type....                    RW
Tstm cov........
CWR.............10  10  10  10  10  10  0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............41  40  41  46  55  61  65  68  71  72  72  70
RH..............67  67  67  65  52  43  38  35  33  33  33  34
20 FT wind dir..E   E   E   SE  SE  S   S   S   S   S   S   S
20 FT wind spd..5   5   5   5   5   10  10  10  10  15  15  15
20 FT wind gust.15  15  15  15  15  15  20  20  20  25  25  25
Mix hgt (kft)...1.0 1.0 0.5 1.0 1.5 2.0 3.0 4.5 6.0 6.5 5.0 3.0
Transp wind dir.E   E   E   SE  S   S   S   S   S   S   S   S
Transp wind spd.10  10  10  10  10  15  15  15  15  20  15  15

$$
Forecaster...Gesell
Requested by...Evan Haugan
Type of request...PRESCRIBED
.TAG 2523230.0/TFX
.DELDT 10/09/25
.FormatterVersion 2.0.0
.EMAIL evan.haugan@usda.gov, tfx.ops@noaa.gov