399
FNUS75 KMSO 251438
FWSMSO
SPOT FORECAST FOR GRANITE GRAVES 220
NATIONAL WEATHER SERVICE MISSOULA MT
838 AM MDT SUN OCT 25 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON OCTOBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MONDAY WILL BE MOSTLY CLOUDY THROUGHOUT THE DAY,
WITH SCATTERED LIGHT SHOWERS IN THE MORNING, WITH VERY LITTLE
CHANCE FOR A WETTING RAIN. A SECOND, MORE ABUNDANT SURGE OF
MOISTURE WILL ARRIVE LATER IN THE AFTERNOON, THAT IS LIKELY TO
BRING A WETTING RAIN. MIXING WILL BE POOR IN THE MORNING, WITH THE
BEST MIXING MAXING OUT AROUND 4500 FT AT 1500 LOCAL. WINDS WILL
START THE DAY SOUTHEAST, THEN TURNING MORE SOUTHWESTERLY IN THE
AFTERNOON WITH THAT SECOND SURGE OF MOISTURE. PERIODS OF RAIN AND
SNOW WILL REMAIN IN THE FORECAST THROUGH THE OVERNIGHT, THEN
SLOWLY TAPERING OFF BY MID-MORNING TUESDAY. 36 HR PRECIPITATION
AMOUNTS WILL LIKELY FALL BETWEEN 0.25-0.50 INCHES.
MONDAY
* SKY/WEATHER.........MOSTLY CLOUDY WITH PERIODIC LIGHT RAIN
SHOWERS. STEADY RAIN LIKELY IN THE AFTERNOON, AFTER 1500
* CWR (> 0.10 INCH)...30 PERCENT.
* CWR (> 0.10 INCH)...10 PERCENT.
* MAX TEMPERATURE.....50-55.
* MIN HUMIDITY........48-53 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH, BECOMING SOUTHWEST 7-10
MPH IN THE AFTERNOON
* MIXING HEIGHT.......1500 FT AGL IN THE MORNING, MAXING OUT 4500
FT AGL AROUND 1500 LOCAL.
* MIXING WINDS........SOUTH 5 MPH.
* PRECIP AMOUNT.......0.03-0.10 INCHES.
MONDAY NIGHT
* SKY/WEATHER.........CLOUDY. RAIN. SNOW OVERNIGHT.
* CWR (> 0.10 INCH)...70 PERCENT.
* MIN TEMPERATURE.....29-34.
* MAX HUMIDITY........95-100 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH.
* MIXING HEIGHT.......1000 FT AGL.
* MIXING WINDS........WEST 10 MPH.
* PRECIP AMOUNT.......0.10-0.20 INCHES.
TUESDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN AND SNOW LIKELY IN THE
MORNING, THEN CHANCE OF RAIN AND SNOW IN THE AFTERNOON.
* CWR (> 0.10 INCH)...20 PERCENT.
* MAX TEMPERATURE.....39-44.
* MIN HUMIDITY........74-79 PERCENT.
* WIND (20 FT)........SOUTHWEST 5-7 MPH.
* MIXING HEIGHT.......2500 FT AGL.
* MIXING WINDS........WEST 15 MPH.
* PRECIP AMOUNT.......0.06 INCHES.
FORECASTER...ROBINSON
REQUESTED BY...THEODEN JOHNSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2624429.0/MSO
.DELDT 10/25/26
.FORMATTERVERSION 2.0.0
.EMAIL THEODEN.M.JOHNSON@USDA.GOV,DANIEL.SULLIVAN@USDA.GOV
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