Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
537 FNUS75 KTFX 251151 FWSTFX Spot Forecast for Dalton 39A...USFS National Weather Service Great Falls MT 551 AM MDT Wed Sep 25 2024 Forecast is based on ignition time of 1000 MDT on September 25. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... A warm and dry southerly flow aloft today will bring well above normal temperatures, gusty southwest winds in the afternoon, and humidity around 20 percent. A cold front is then forecast to shift increasing winds more westerly around and after midnight with moderate to good humidity recovery. Gusty winds will continue through Thursday, but temperatures will be about 15 degrees cooler than today, and afternoon humidity should remain above 30 percent. Breezy conditions will likely persist into Friday with gradual warming. -Coulston .REST OF TODAY... Sky/weather.........Sunny (0-10 percent). CWR.................0 percent. LAL.................1. Max temperature.....76-81. Min humidity........17-22 percent. Wind (20 ft)........ Slope/valley.......Southwest winds around 5 mph increasing to 10 to 15 mph in the afternoon with gusts to 20 mph possible. Mixing height.......8500 ft AGL. Transport winds.....Southwest around 20 mph. Haines Index........3 or very low potential for large plume dominated fire growth. .TONIGHT... Sky/weather.........Mostly clear (20-30 percent). CWR.................0 percent. LAL.................1. Min temperature.....44-49. Max humidity........73-78 percent. Wind (20 ft)........ Slope/valley.......Southwest winds 5 to 10 mph with gusts to 15 mph shifting to the west and increasing to 10 to 15 mph with gusts to 25 mph around and after midnight. Mixing height.......0 ft AGL. Transport winds.....West around 15 mph. Haines Index........ .THURSDAY... Sky/weather.........Sunny (15-25 percent). CWR.................0 percent. LAL.................1. Max temperature.....59-64. Min humidity........32-37 percent. Wind (20 ft)........ Slope/valley.......West winds 10 to 15 mph with gusts to 25 mph. Mixing height.......4500 ft AGL. Transport winds.....West around 20 mph. Haines Index........2 or very low potential for large plume dominated fire growth. $$ Forecaster...Coulston Requested by...Nick Boucher Type of request...PRESCRIBED .TAG 2422964.1/TFX .DELDT 09/25/24 .FormatterVersion 2.0.0 .EMAIL donald.iles@usda.gov,jason.l.gilbert@usda.gov,jarel.kurtz@usda.gov,nicholas.boucher@usda.gov, tfx.ops@noaa.gov