867  
FNUS75 KMSO 171313  
FWSMSO  
 
SPOT FORECAST FOR CHERRY/TRAPPER  
NATIONAL WEATHER SERVICE MISSOULA MT  
713 AM MDT FRI APR 17 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 MDT ON APRIL 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
A RIDGE OF HIGH PRESSURE WILL BE BUILDING OVER THE  
REGION THIS WEEKEND CAUSING A WARMING AND DRYING TREND. SOME HIGH  
LEVEL CLOUDS ARE EXPECTED TO MOVE INTO THE REGION SATURDAY  
AFTERNOON. GUSTY SOUTHERLY WINDS ARE EXPECTED EACH AFTERNOON AND  
EVENING.  
   
SATURDAY  
 
* SKY/WEATHER.........MOSTLY SUNNY BECOMING MOSTLY CLOUDY IN THE  
AFTERNOON.  
* CWR (> 0.10 INCH)...0 PERCENT.  
* CHANCE LIGHTNING....0 PERCENT.  
* MAX TEMPERATURE.....50-55.  
* MIN HUMIDITY........25-30 PERCENT.  
* WIND (20 FT)........VARIABLE 2-5 MPH BECOMING SOUTHWEST 5-10  
MPH WITH GUSTS TO AROUND 20 MPH IN THE AFTERNOON.  
* MIXING HEIGHT.......INCREASING TO 8500 FT AGL.  
* MIXING WINDS........SOUTHWEST 10 MPH.  
* PRECIP AMOUNT.......0.00 INCHES.  
   
SATURDAY NIGHT  
 
* SKY/WEATHER.........MOSTLY CLEAR.  
* CWR (> 0.10 INCH)...0 PERCENT.  
* CHANCE LIGHTNING....0 PERCENT.  
* MIN TEMPERATURE.....28-33.  
* MAX HUMIDITY........47-52 PERCENT.  
* WIND (20 FT)........SOUTHWEST 5-10 MPH IN THE EVENING BECOMING  
VARIABLE 2-5 MPH.  
* MIXING HEIGHT.......DECREASING TO 500 FT AGL.  
* MIXING WINDS........SOUTHWEST 10 MPH.  
* PRECIP AMOUNT.......0.00 INCHES.  
   
SUNDAY  
 
* SKY/WEATHER.........MOSTLY SUNNY.  
* CWR (> 0.10 INCH)...0 PERCENT.  
* CHANCE LIGHTNING....0 PERCENT.  
* MAX TEMPERATURE.....58-63.  
* MIN HUMIDITY........20-25 PERCENT.  
* WIND (20 FT)........VARIABLE 2-5 MPH BECOMING SOUTH 5-10 MPH  
WITH GUSTS TO AROUND 20 MPH IN THE AFTERNOON.  
* MIXING HEIGHT.......INCREASING TO 9000 FT AGL.  
* MIXING WINDS........SOUTHWEST 10 MPH.  
* PRECIP AMOUNT.......0.00 INCHES.  
 
 
FORECASTER...SMITH  
REQUESTED BY...RUSTY BUTLER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2610603.0/MSO  
.DELDT 04/17/26  
.FORMATTERVERSION 2.0.0  
.EMAIL RBUTLER@BLM.GOV  
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