813  
FNUS75 KMSO 191630  
FWSMSO  
 
SPOT FORECAST FOR WHITE SWAN RTRL  
NATIONAL WEATHER SERVICE MISSOULA MT  
930 AM MST WED NOV 19 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 MST ON NOVEMBER 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
MIXING AND DISPERSION WILL BE POOR OVERALL TODAY,  
WITH LIGHT WINDS AND LOW MIXING HEIGHTS, ESPECIALLY THIS MORNING.  
MIXING HEIGHTS WILL INCREASE FROM 500 FT TO 1500 AGL AFTER 1300  
THIS AFTERNOON. SIMILAR CONDITIONS ARE EXPECTED INTO THURSDAY.  
   
REST OF TODAY  
 
* SKY/WEATHER.........MOSTLY CLOUDY.  
* CWR (> 0.10 INCH)...0 PERCENT.  
* CHANCE LIGHTNING....0 PERCENT.  
* MAX TEMPERATURE.....43-48.  
* MIN HUMIDITY........69-74 PERCENT.  
* WIND (20 FT)........VARIABLE 1-3 MPH.  
* MIXING HEIGHT.......500 FT AGL THIS MORNING INCREASING TO 1500  
FEET AGL AFTER 1300.  
* MIXING WINDS........NORTHEAST 5 MPH.  
* PRECIP AMOUNT.......0.00 INCHES.  
   
TONIGHT  
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* CWR (> 0.10 INCH)...0 PERCENT.  
* CHANCE LIGHTNING....0 PERCENT.  
* MIN TEMPERATURE.....31-36.  
* MAX HUMIDITY........82-87 PERCENT.  
* WIND (20 FT)........VARIABLE 1-3 MPH.  
* MIXING HEIGHT.......1000 FT AGL.  
* MIXING WINDS........NORTHEAST 5 MPH.  
* PRECIP AMOUNT.......0.00 INCHES.  
   
THURSDAY  
 
* SKY/WEATHER.........PARTLY CLOUDY.  
* CWR (> 0.10 INCH)...0 PERCENT.  
* CHANCE LIGHTNING....0 PERCENT.  
* MAX TEMPERATURE.....43-48.  
* MIN HUMIDITY........75-80 PERCENT.  
* WIND (20 FT)........VARIABLE 1-3 MPH.  
* MIXING HEIGHT.......500 FT AGL INCREASING TO 1500 FT AGL IN THE  
AFTERNOON.  
* MIXING WINDS........NORTH 5 MPH.  
* PRECIP AMOUNT.......0.00 INCHES.  
 
 
FORECASTER...LUKINBEAL  
REQUESTED BY...SAMUEL PEEL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2526391.0/MSO  
.DELDT 11/19/25  
.FORMATTERVERSION 2.0.0  
.EMAIL SAMUEL.PEEL@CSKT.ORG  
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