758
FNUS75 KMSO 172203
FWSMSO
SPOT FORECAST FOR SAND CREEK
NATIONAL WEATHER SERVICE MISSOULA MT
403 PM MDT THU SEP 17 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON SEPTEMBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
COOL, CLOUDY, AND SHOWERY WITH THUNDERSTORMS AND
HIGH, TO NEAR-CERTAIN, CHANCES FOR WETTING RAINS EACH PERIOD THROUGH
THE FORECAST. CONVECTION ON FRIDAY AFTERNOON WILL BE CAPABLE OF
PRODUCING EXCESSIVE RAINFALL RATES AND CONCERNS WITH FLASH
FLOODING AND DEBRIS FLOWS IN STEEP TERRAIN AND VULNERABLE AREAS.
MILD NIGHT (40S) AT VALLEY BOTTOM INTO SATURDAY MORNING WITH
PRECIPITATION AND CLOUD COVER. SHOWERS CONTINUE INTO SATURDAY
BEFORE TAPERING INTO THE OVERNIGHT AND SUNDAY LEADING TO DRIER
CONDITIONS FOR THE EARLY PART OF NEXT WEEK. THERE IS AN 85% CHANCE
TO SEE AN INCH OR MORE OF RAIN IN A 48 HOUR PERIOD ENDING
SATURDAY NIGHT.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CWR (> 0.10 INCH)...95 PERCENT.
* CHANCE LIGHTNING....80 PERCENT.
* MAX TEMPERATURE.....BOTTOM: 58-63, TOP: 50-55.
* MIN HUMIDITY........BOTTOM: 54-59 PERCENT, TOP: 58-63.
* WIND (20 FT)........VARIABLE/DOWNSLOPE 1-5 MPH IN THE MORNING SHIFTING
TO THE NORTH 3-8 MPH WITH GUSTS TO 15 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......INCREASING TO 9000 FT MSL IN THE AFTERNOON.
* MIXING WINDS........VARIABLE/SOUTH 5 MPH.
* PRECIP AMOUNT.......0.15-0.68 INCHES.
FRIDAY NIGHT
* SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY AND CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS OVERNIGHT.
* CWR (> 0.10 INCH)...90 PERCENT.
* CHANCE LIGHTNING....40 PERCENT.
* MIN TEMPERATURE.....40-45.
* MAX HUMIDITY........95-100 PERCENT.
* WIND (20 FT)........VARIABLE/NORTHEAST 2-6 MPH WITH GUSTS TO 10
MPH.
* MIXING HEIGHT.......DECREASING TO 500 FT AGL.
* MIXING WINDS........VARIABLE/SOUTHEAST 5 MPH.
* PRECIP AMOUNT.......0.02-0.33 INCHES.
SATURDAY
* SKY/WEATHER.........CLOUDY. RAIN IN THE MORNING, THEN RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* CWR (> 0.10 INCH)...80 PERCENT.
* CHANCE LIGHTNING....25 PERCENT.
* MAX TEMPERATURE.....BOTTOM 52-57, TOP: 41-46.
* MIN HUMIDITY........70-75 PERCENT.
* WIND (20 FT)........NORTH 2-6 MPH WITH GUSTS TO 10 MPH.
* MIXING HEIGHT.......INCREASING TO 10000 FT MSL.
* MIXING WINDS........NORTH 5 MPH.
* PRECIP AMOUNT.......0.15-0.50 INCHES.
FORECASTER...PARKER
REQUESTED BY...RICHARD GRIFFIN AKA GRIFF
TYPE OF REQUEST...WILDFIRE
.TAG 2621956.0/MSO
.DELDT 09/17/26
.FORMATTERVERSION 2.0.0
.EMAIL 2026.SANDCREEK.PLANS@FIRENET.GOV,MEGHAN_CAROSELLA@FIRENET.GOV,RICHARD.GRIFFIN@USDA.GOV
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