913
FNUS75 KMSO 251137
FWSMSO
SPOT FORECAST FOR GROUSE CREEK
NATIONAL WEATHER SERVICE MISSOULA MT
537 AM MDT THU JUN 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 PDT ON JUNE 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THE BURN SITE WILL BE MOSTLY SHELTERED FROM THE
NORTHWEST WINDS TODAY EXCEPT NEAR THE TOP OF THE SLOPE. MID-SLOPE
DOWN TO THE DRAINAGE BOTTOM WILL SEE MAINLY TERRAIN DRIVEN WINDS
TODAY.
SHOWERS AHEAD OF A COLD FRONT WILL ARRIVE VERY LATE TONIGHT AND
EARLY FRIDAY MORNING. THIS IS A MAJOR PATTERN CHANGE, EXPECT A
PROLONGED PERIOD OFF COOLER, WETTER WEATHER WITH STORM TOTAL
ACCUMULATION OF BETWEEN 0.80 AND 1.30 INCHES OF RAIN BY SATURDAY
NIGHT. WE EXPECT THE RAIN WILL CONTINUE INTO SUNDAY AS WELL.
REST OF TODAY
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...LESS THAN 10 PERCENT.
* CHANCE LIGHTNING....UP TO 10 PERCENT.
* MAX TEMPERATURE.....71-76.
* MIN HUMIDITY........19-24 PERCENT.
* WIND (20 FT)........VARIABLE 2-4 MPH BECOMING NORTHWEST 5-7 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......4500 FT AGL INCREASING TO 9000 FT AGL LATE IN
THE MORNING.
* MIXING WINDS........WEST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TONIGHT
* SKY/WEATHER.........CLOUDY. CHANCE OF RAIN IN THE EVENING, THEN
RAIN LIKELY OVERNIGHT.
* CWR (> 0.10 INCH)...LESS THAN 10 PERCENT.
* CHANCE LIGHTNING....UP TO 10 PERCENT.
* MIN TEMPERATURE.....49-54.
* MAX HUMIDITY........74-79 PERCENT.
* WIND (20 FT)........NORTH 5-7 MPH IN THE EVENING BECOMING
VARIABLE 2-4 MPH.
* MIXING HEIGHT.......4000 FT AGL DECREASING TO 500 FT AGL EARLY IN
THE EVENING.
* MIXING WINDS........NORTHWEST 10 MPH.
* PRECIP AMOUNT.......0.01 INCHES.
FRIDAY
* SKY/WEATHER.........CLOUDY. RAIN LIKELY IN THE MORNING, THEN RAIN
SHOWERS AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CWR (> 0.10 INCH)...90 PERCENT.
* CHANCE LIGHTNING....30 PERCENT.
* MAX TEMPERATURE.....55-60.
* MIN HUMIDITY........74-79 PERCENT.
* WIND (20 FT)........VARIABLE 2-4 MPH BECOMING WEST 5-6 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......2000 FT AGL.
* MIXING WINDS........WEST 10 MPH.
* PRECIP AMOUNT.......0.29 INCHES.
FORECASTER...LEACH
REQUESTED BY...MELI BAILEY
TYPE OF REQUEST...WILDFIRE
.TAG 2616176.0/MSO
.DELDT 06/25/26
.FORMATTERVERSION 2.0.0
.EMAIL IDGVC@FIRENET.GOV
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