340
FNUS75 KTFX 172314
FWSTFX

Spot Forecast for Young...BLM
National Weather Service Great Falls MT
514 PM MDT Tue Jun 17 2025

Forecast is based on forecast start time of 1700 MDT on June 17.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Scattered showers and isolated thunderstorms developing west of
the wildfire will continue eastward through the remainder of the
evening. Shower and thunderstorms in the vicinity will be capable
of producing gusty and erratic winds at the fire, even if well
away from where the precipitation is falling. Heading into later tonight
and Wednesday, building upper level ridging will promote a dry
day, with diurnally driven westerly winds gusting to around 20 mph
by the afternoon Wednesday.

.THIS EVENING AND TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent). Chance of
                    showers and thunderstorms early in the evening.
CWR.................5 percent.
Chance of thunder...20 percent.
Min temperature.....53-58.
Max humidity........57-62 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds around 5 mph becoming
                    downslope/valley around 6 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    evening.
 Ridgetop...........Southwest 5 to 10 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 10 to 15 mph.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40  50  54  47  52  48  28  24  15  15  10  9
Weather cov.....SCH CHC CHC SCH SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH
CWR.............10  10  10  10   5   5  5   0   0   0   0   0
Chc of thdr (%).20  20  10  10   5   5  0   0   0   0   0   0
Temp............79  76  73  69  66  64  62  59  59  57  56  56
RH..............24  26  32  39  42  46  51  57  55  57  61  62
20 FT wind dir..SW  SW  SW  S   S   S   SW  W   W   W   W   W
20 FT wind spd..5   5   5   5   5   5   5   5   5   5   5   5
20 FT wind gust.10  10  10  10  10  10  10  10  10  10  10  10
Ridge wind dir..S   SW  SW  SW  SW  W   NW  NW  W   W   W   W
Ridge wind spd..5   10  15  15  15  15  15  10  15  15  15  15
Mix hgt (kft)...8.5 5.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SW  W   W   SW  SW  SW  SW  W   W   W   W   W
Transp wind spd.10  10  15  10  5   10  10  10  10  10  10  15

.WEDNESDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....80-85.
Min humidity........12-17 percent.
Wind (20 ft)........
 Slope/valley.......Up slope/valley around 3 mph, becoming west 5
                    to 10 mph gusting to 20 mph.
 Ridgetop...........West 15 to 20 mph.
Mixing height.......9000 ft AGL.
Transport winds.....West 15 to 20 mph.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........10  7   4   5   5   3   4   3   6   6   7   5
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............55  57  61  65  69  72  75  78  79  80  81  81
RH..............59  55  45  38  34  29  24  21  20  18  17  17
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..5   5   5   10  10  10  10  10  10  10  10  10
20 FT wind gust.10  15  15  15  20  20  20  20  20  20  20  20
Ridge wind dir..W   W   W   W   W   W   W   W   W   W   W   W
Ridge wind spd..15  15  20  20  20  20  20  20  20  20  20  20
Mix hgt (kft)...0.5 0.5 1.0 2.0 3.0 4.0 5.5 6.5 7.5 8.5 8.5 9.0
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.15  15  15  20  20  20  20  20  20  20  20  20

$$
Forecaster...McDowell
Requested by...Jackie Wichman
Type of request...WILDFIRE
.TAG 2516151.0/TFX
.DELDT 06/17/25
.FormatterVersion 2.0.0
.EMAIL MTLEC@firenet.gov, tfx.ops@noaa.gov