738 FNUS75 KMSO 311309 FWSMSO Spot Forecast for North Fork Fire National Weather Service Missoula MT 709 AM MDT Thu Jul 31 2025 Forecast is based on forecast start time of 0800 MDT on July 31. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Thunderstorm activity will again increase this afternoon. Storm development will begin around 1400 MDT and last into the evening. Thunderstorms will be capable of erratic, gusty winds of about 30-40 mph, frequent lightning, and heavy rain, especially after 1600 MDT. Friday will not be as hot with afternoon thunderstorms. Wind gusts of 20-30 mph will be common along with rain. There is a 60% chance for wetting rain by this evening and 70% by Friday evening. .REST OF TODAY... * Sky/Weather.........Partly cloudy. Chance of showers and thunderstorms in the afternoon. * Max Temperature.....76-81. * Min Humidity........35-40 percent. * Wind (20 ft)........Variable 1-3 mph becoming east around 5-8 mph in the afternoon. A south wind gusting to 30-40 mph will be possible under thunderstorms in the afternoon. * Mixing Height.......3000 ft agl increasing to 7000 ft agl. * Mixing Winds........Southeast 10 mph. .TONIGHT... * Sky/Weather.........Partly cloudy. Chance of showers and thunderstorms in the evening. Patchy fog overnight. * Min Temperature.....44-49. * Max Humidity........92-97 percent. * Wind (20 ft)........East around 5 mph in the evening becoming variable 1-3 mph. * Mixing Height.......500 ft agl. * Mixing Winds........South 10 mph. .FRIDAY... * Sky/Weather.........Mostly sunny then becoming mostly cloudy. Patchy fog in the morning. Rain showers likely and chance of thunderstorms in the afternoon. * Max Temperature.....71-76. * Min Humidity........40-45 percent. * Wind (20 ft)........Variable 1-3 mph becoming southeast 5-8 mph Gusts 20-30 mph with afternoon thunderstorms. * Mixing Height.......3000 ft agl increasing to 7500 ft agl late in the morning. * Mixing Winds........Southwest 10 mph. $$ Forecaster...Kitsmiller Requested by...McDonald Type of request...WILDFIRE .TAG 2518924.0/MSO .DELDT 07/31/25 .FormatterVersion 2.0.0 .EMAIL charles.mcdonald3@usda.gov