Suppression Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
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006
FNUS75 KTFX 021326
FWSTFX
Spot Forecast for DUNN GULCH...HELENA FIRE DISPATCH USFS
National Weather Service Great Falls MT
726 AM MDT Sat Aug 2 2025
Forecast is based on forecast start time of 0800 MDT on August 02.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
There will be isolated showers and thunderstorms across the fire this
afternoon and evening. The greatest risk for thunderstorms is
between 1400 and 1800. Tonight there will be good overnight
humidity recovery. This morning winds will be around 5 - 10 mph
increasing to 10 - 15 mph this afternoon with gusts up to 20 mph.
Sunday afternoon and evening there will be isolated showers and
thunderstorms around the fire. Any thunderstorm will produce a
brief heavy downpour, frequent lightning, small hail, and gusty,
erratic winds. On Sunday humidity will be as low as 20% with winds
around 5 - 10 mph with gusts up to 20 mph.
.REST OF TODAY...
Sky/weather.........Mostly sunny (45-55 percent). Chance of showers
and thunderstorms in the afternoon.
CWR.................5 percent.
Chance of thunder...13 percent.
Max temperature.....73-78.
Min humidity........34-39 percent.
Wind (20 ft)........
Slope/valley.......Light winds becoming northwest around 15 mph.
Gusty and erratic winds expected near
thunderstorms early in the afternoon. Gusty and
erratic winds expected near thunderstorms late
in the afternoon.
Ridgetop...........West 10 to 15 mph.
Mixing height.......6000 ft AGL.
Transport winds.....West 10 to 15 mph shifting to the northwest
around 20 mph late in the afternoon.
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........48 48 36 42 38 53 59 58 55 45
Weather cov..... SCH SCH CHC CHC CHC SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH CHC CHC SCH
CWR.............10 10 10 10 10 10 10 10 10 10
Chc of thdr (%).0 10 10 10 10 10 10 20 20 20
Temp............61 62 66 68 71 73 73 75 74 74
RH..............65 65 64 59 54 51 47 42 43 43
20 FT wind dir..W W W W W W W W NW NW
20 FT wind spd..0 5 5 5 5 10 10 10 10 15
20 FT wind gust.5 10 10 10 15 15 15 20 20 20
Ridge wind dir..W W W W W W W W W NW
Ridge wind spd..15 15 15 15 10 15 15 15 15 15
Mix hgt (kft)...1.5 2.5 3.5 5.0 5.5 6.0 6.0 6.0 6.0 6.0
Transp wind dir.NW W W W W W W W W NW
Transp wind spd.10 10 10 15 15 15 15 15 20 20
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Slight chance of
showers and thunderstorms early in the evening.
CWR.................5 percent.
Chance of thunder...22 percent.
Min temperature.....54-59.
Max humidity........61-66 percent.
Wind (20 ft)........
Slope/valley.......Northwest winds 10 to 15 mph early in the
evening decreasing to around 5 mph, then
shifting to the east overnight becoming light.
Gusty and erratic winds expected near
thunderstorms early in the evening.
Ridgetop...........Northwest 15 to 20 mph shifting to the west 10
to 15 mph overnight.
Mixing height.......1000 ft AGL.
Transport winds.....Northwest 15 to 20 mph decreasing to 5 to 10
mph late in the evening, then shifting to the
southwest overnight.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40 40 40 40 27 40 28 18 15 17 17 17
Weather cov.....SCH SCH
Weather type....RW RW
Tstm cov........SCH SCH
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
Chc of thdr (%).20 10 10 10 10 10 0 0 0 0 0 0
Temp............73 73 70 67 65 64 63 62 61 59 58 57
RH..............43 45 48 50 54 54 57 56 59 61 62 66
20 FT wind dir..NW NW NW NW NW NW N E E E E E
20 FT wind spd..15 10 10 5 5 5 5 5 0 0 0 0
20 FT wind gust.20 20 20 15 10 10 10 5 5 5 5
Ridge wind dir..NW NW NW NW NW W W W W W W W
Ridge wind spd..15 20 20 20 15 15 10 10 10 10 15 15
Mix hgt (kft)...5.5 5.0 2.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Transp wind dir.NW NW NW NW NW N W SW S SW SW S
Transp wind spd.20 20 15 10 10 5 5 5 5 5 5 5
.SUNDAY...
Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of thunder...7 percent.
Max temperature.....77-82.
Min humidity........20-25 percent.
Wind (20 ft)........
Slope/valley.......East winds around 5 mph shifting to the west
late in the afternoon.
Ridgetop...........West 10 to 15 mph decreasing to around 5 mph
late in the afternoon.
Mixing height.......8000 ft AGL.
Transport winds.....Southwest 5 to 10 mph shifting to the west 10
to 15 mph in the late morning and afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 23 12 6 3 5 15 15 15 18 18 18
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 10 10 10 10 10 10
Temp............56 58 60 62 66 69 72 74 76 78 79 79
RH..............66 65 61 57 51 45 38 34 31 27 25 24
20 FT wind dir..E SE S SW SW W W 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 15 15 15 15 15 15
Ridge wind dir..W W W W W SW SW SW SW SW W W
Ridge wind spd..15 15 15 15 15 10 10 10 10 10 10 5
Mix hgt (kft)...1.0 1.0 1.5 2.5 3.5 5.5 6.5 7.5 8.0 8.0 8.0 8.0
Transp wind dir.SW S SW W W W W W W W W W
Transp wind spd.5 5 5 10 10 15 15 15 15 15 15 10
$$
Forecaster...Gesell
Requested by...JOHN
Type of request...WILDFIRE
.TAG 2519071.0/TFX
.DELDT 08/02/25
.FormatterVersion 2.0.0
.EMAIL mthdc@firenet.gov,anna.lampert@usda.gov,clint.reichert@usda.gov, tfx@ops.noaa.gov