Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
196
FNUS75 KTFX 091131
FWSTFX
Spot Forecast for Cabin Gulch Unit 70...USFS // Helena-Lewis & Clark NF
National Weather Service Great Falls MT
531 AM MDT Fri May 9 2025
Forecast is based on ignition time of 0900 MDT on May 09.
If conditions become unrepresentative...contact the National Weather
Service.
...Thunderstorms with little rainfall and gusty winds Saturday
afternoon...
.DISCUSSION...
An upper level ridge builds over the burn area today, allowing
for the warming trend to continue and dry conditions. On Saturday,
it will be even warmer/drier, with thunderstorms possible after
3 PM. Some storms will produce little rainfall and gusty winds.
Similar conditions are expected on Sunday, just not as warm.
.REST OF TODAY...
Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....66-71.
Min humidity........20-25 percent.
Wind (20 ft)........
Slope/valley.......Southwest winds 5 to 10 mph.
Mixing height.......8500 ft AGL.
Transport winds.....South around 10 mph shifting to the southwest
in the afternoon.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11 27 34 38 27 25 33 42 52
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0
Temp............51 55 58 61 63 65 67 67 68
RH..............44 48 45 40 36 30 26 25 25
20 FT wind dir..S SW SW SW SW SW SW SW SW
20 FT wind spd..5 5 10 10 10 10 10 10 10
20 FT wind gust.10 15 15 15 20 15 20 15 20
Mix hgt (kft)...1.5 2.5 3.5 4.5 6.0 6.5 7.5 8.0 8.5
Transp wind dir.S S SW SW W W W W W
Transp wind spd.10 10 10 15 15 15 15 15 15
.TONIGHT...
Sky/weather.........Mostly cloudy (55-65 percent) then becoming
partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....47-52.
Max humidity........40-45 percent.
Wind (20 ft)........
Slope/valley.......Downslope at 4 to 8 mph.
Mixing height.......0 ft AGL.
Transport winds.....West 10 to 15 mph shifting to the south 5 to 10
mph early in the evening.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........65 63 51 52 37 37 34 36 33 38 32 17
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............68 66 64 60 58 57 54 54 53 52 51 51
RH..............25 26 29 32 34 38 40 42 44 45 43 41
20 FT wind dir..SW SW S E E NE E W W W W W
20 FT wind spd..10 5 5 5 5 5 10 10 10 10 10 10
20 FT wind gust.15 15 15 15 15 15 15 15 15 15 15 15
Mix hgt (kft)...7.5 4.0 0.5 0.1 0.5 0.1 0.1 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SW W SE SE SE SE S S S S S S
Transp wind spd.15 10 5 5 10 10 10 10 10 10 10 10
.SATURDAY...
Sky/weather.........Partly cloudy. (35 percent). Slight chance of
showers and thunderstorms in the afternoon.
CWR.................0 percent increasing to 15 percent in the
afternoon.
Chance of thunder...18 percent.
Max temperature.....72-77.
Min humidity........17-22 percent.
Wind (20 ft)........
Slope/valley.......Southwest winds around 10 mph shifting to the
south with gusts to around 30 mph in the late
morning and afternoon. Gusty and erratic winds
expected near thunderstorms in the afternoon.
Mixing height.......10000 ft AGL increasing to 10500 ft AGL late in
the afternoon.
Transport winds.....South 10 to 15 mph increasing
to 20 to 30 mph in the afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........20 36 39 34 18 24 40 40 40 55 55 55
Weather cov..... SCH SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 20 20 20 20 20 20
Chc of thdr (%).0 0 0 0 0 0 20 20 20 20 20 20
Temp............50 52 55 59 63 67 70 72 73 74 73 70
RH..............42 39 38 35 32 29 27 25 22 22 24 28
20 FT wind dir..W SW SW S S S S S S SW SW SW
20 FT wind spd..10 10 10 10 15 15 15 15 15 15 15 15
20 FT wind gust.15 15 20 20 25 25 30 30 30 30 30 30
Mix hgt (kft)...0.5 0.5 0.5 1.5 2.5 4.0 6.0 8.0 10 11 8.0 4.5
Transp wind dir.SW S S S SW SW SW SW SW SW SW SW
Transp wind spd.10 10 10 15 20 25 25 30 30 30 25 20
$$
Forecaster...Brusda
Requested by...Tyler Mick
Type of request...PRESCRIBED
.TAG 2513531.0/TFX
.DELDT 05/09/25
.FormatterVersion 2.0.0
.EMAIL tyler.mick@usda.gov,michael.tuffelmire@usda.gov