425
FNUS75 KTFX 041337
FWSTFX

Spot Forecast for Mitch...US Wildland Fire Service
National Weather Service Great Falls MT
737 AM MDT Fri Sep 4 2026

Forecast is based on forecast start time of 0800 MDT on September 04.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Today and tomorrow it will be dry with relative humidity as low
as 20% each afternoon. Today winds will increase to 10 to 15 mph
with gusts up to 20 mph this afternoon. Tonight winds will die off
to around 5 to 10 mph with poor humidity recovery. Tomorrow winds
will be around 5 to 10 mph with gusts up to 15 mph.


.REST OF TODAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....84-89.
Min humidity........18-23 percent.
Wind (20 ft)........
 Slope/valley.......Southeast winds around 10 mph shifting to the
                    west in the afternoon.
 Ridgetop...........South 25 to 30 mph becoming southwest 15 to 20
                    mph late in the afternoon, then shifting to the
                    northwest around 10 mph late in the afternoon.
Mixing height.......4500 ft AGL.
Transport winds.....Southeast around 15 mph shifting to the
                    southwest early in the afternoon, then shifting
                    to the west late in the afternoon.

TIME (MDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........35  31  26  19  5   8   13  7   21  19
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............63  66  72  75  78  81  84  84  84  85
RH..............39  37  34  30  27  25  22  21  20  20
20 FT wind dir..E   SE  SE  SE  SW  W   W   W   W   NW
20 FT wind spd..10  10  10  10  10  10  10  15  15  10
20 FT wind gust.15  20  15  15  15  15  15  20  20  20
Ridge wind dir..S   S   S   S   S   SW  SW  SW  W   NW
Ridge wind spd..30  30  30  30  30  25  25  20  15  10
Mix hgt (kft)...0.5 1.5 1.5 2.0 3.0 4.0 4.0 4.5 4.5 4.5
Transp wind dir.E   SE  SE  S   SW  W   W   W   W   W
Transp wind spd.15  15  15  15  15  15  15  15  15  15

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....54-59.
Max humidity........47-52 percent.
Wind (20 ft)........
 Slope/valley.......North winds around 10 mph becoming 5 to 10 mph
                    overnight.
 Ridgetop...........Northwest 0 to 5 mph shifting to the south
                    around 5 mph early in the evening, then
                    shifting to the southeast 10 to 15 mph
                    overnight.
Mixing height.......500 ft AGL.
Transport winds.....North around 15 mph.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........23  30  16  10  9   20  22  38  41  39  22  20
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............83  80  76  69  67  66  65  63  62  61  58  58
RH..............22  25  29  35  37  37  40  42  44  45  48  51
20 FT wind dir..NW  NW  N   N   N   N   N   N   N   N   N   N
20 FT wind spd..10  10  10  10  10  10  10  10  10  10  10  5
20 FT wind gust.20  15  20  20  20  20  20  20  20  15  15  15
Ridge wind dir..N   NW  SW  S   S   S   S   S   SE  SE  SE  SE
Ridge wind spd..5   0   5   5   5   5   5   5   10  15  15  15
Mix hgt (kft)...4.0 2.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.NW  N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.15  15  15  15  15  15  15  15  15  15  15  15

.SATURDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....81-86.
Min humidity........20-25 percent.
Wind (20 ft)........
 Slope/valley.......North winds 5 to 10 mph.
 Ridgetop...........Southeast 10 to 15 mph becoming northeast 0 to
                    5 mph late in the afternoon.
Mixing height.......6000 ft AGL.
Transport winds.....North 10 to 15 mph.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........39  39  39  4   4   4   7   7   7   8   8   8
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............57  56  59  62  67  71  74  77  80  81  82  83
RH..............52  55  51  47  41  36  32  30  27  26  25  26
20 FT wind dir..N   N   N   N   N   N   N   N   N   N   N   N
20 FT wind spd..5   5   5   5   5   5   10  10  10  10  10  10
20 FT wind gust.10  10  10  10  10  10  15  15  15  15  15  15
Ridge wind dir..SE  SE  SE  SE  SE  S   S   SE  E   NE  NE  NE
Ridge wind spd..15  15  15  15  15  15  15  10  5   0   0   5
Mix hgt (kft)...0.5 0.5 0.5 1.5 2.0 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Transp wind dir.N   N   N   N   N   N   NE  N   N   NE  N   N
Transp wind spd.15  10  10  15  10  10  10  10  10  10  15  15

$$
Forecaster...Gesell
Requested by...IC Carney
Type of request...WILDFIRE
.TAG 2621192.0/TFX
.DELDT 09/04/26
.FormatterVersion 2.0.0
.EMAIL mtlec@firenet.gov, tfx.ops@noaa.gov