790
FNUS75 KMSO 211838
FWSMSO
SPOT FORECAST FOR CHERRY PEAK FIRE
NATIONAL WEATHER SERVICE MISSOULA MT
1238 PM MDT FRI AUG 21 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 MDT ON AUGUST 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY MORNING...
DISCUSSION
NEAR CRITICAL FIRE WEATHER CONDITIONS WILL BE
PRESENT FROM SATURDAY EVENING THROUGH SUNDAY MORNING DUE TO THE
POTENTIAL FOR DRY THUNDERSTORMS.
HAZY, WARM, AND DRY CONDITIONS CONTINUED TODAY WITH TEMPERATURES
NEAR 83F AND MIN RH 18%. WINDS WERE GENERALLY EASTERLY AND LIGHT.
SATURDAY AGAIN WILL BE HOT AND DRY, A DISTURBANCE MOVING ONSHORE
NW WASHINGTON WILL ALLOW FOR AN INCREASE IN WINDS. LATE AFTERNOON
SUFFICIENT INSTABILITY WILL BE PRESENT TO PRODUCE MOSTLY DRY
THUNDERSTORMS, 20% CHANCE OR LESS. THROUGH 9 PM THESE STORMS WILL
BE CAPABLE OF LIGHTNING AND GUSTY OUTFLOW WINDS 25 TO 40 MPH.
OVERNIGHT THERE IS A 15% CHANCE OF NOCTURNAL THUNDERSTORMS
CONTINUING TO PRODUCE LIGHTNING WITH LITTLE TO NO PRECIPITATION.
SUNDAY MORNING A VERY DRY COLD FRONT MOVES THROUGH THE REGION.
WIND GUSTS UP TO 25 MPH WILL BE POSSIBLE, WITH RHS SLIGHTLY
IMPROVED COMPARED TO SATURDAY DUE TO COOLER TEMPERATURES BUT
OVERALL DRIER AIR MASS. THE ADDITION OF BREEZY AND LOW RH
CONDITIONS WILL ALLOW FOR NEAR ELEVATED FIRE WEATHER CONCERNS.
SATURDAY
* SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWER
BEFORE NOON.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....UP TO 10 PERCENT.
* MAX TEMPERATURE.....75-80.
* MIN HUMIDITY........24-29 PERCENT.
* WIND (20 FT)........SOUTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHWEST 6-12 MPH WITH GUSTS 15-20 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......2500 FT AGL INCREASING TO 9000 FT AGL.
* MIXING WINDS........SOUTH 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
SATURDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING AND NOCTURNAL
THUNDERSTORMS OVERNIGHT.
* CWR (> 0.10 INCH)...LESS THAN 10 PERCENT.
* CHANCE LIGHTNING....20 PERCENT.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........56-61 PERCENT.
* WIND (20 FT)........SOUTHWEST 5-6 MPH SHIFTING TO THE WEST 8-9
MPH WITH GUSTS TO 15 MPH OVERNIGHT.
* MIXING HEIGHT.......2500 FT AGL DECREASING TO 500 FT AGL EARLY IN
THE EVENING.
* MIXING WINDS........SOUTHWEST 10 MPH.
* PRECIP AMOUNT.......0.03 INCHES.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....63-68.
* MIN HUMIDITY........31-36 PERCENT.
* WIND (20 FT)........SOUTHWEST 8-13 MPH. GUSTS UP TO 25 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......2000 FT AGL INCREASING TO 7500 FT AGL.
* MIXING WINDS........WEST 15 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
FORECASTER...BEC
REQUESTED BY...BRITTENY ALLESTEAD
TYPE OF REQUEST...WILDFIRE
.TAG 2619977.4/MSO
.DELDT 08/21/26
.FORMATTERVERSION 2.0.0
WADE.BACHE@USDA.GOV,TREVOR.UNSWORTH@USDA.GOV,2026.CHERRYPEAK.PLANS@FIRENET.GOV,MTMDC@FIRENET.GOV,BRIAN.CONLAN@NOAA.GOV
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