496  
FNUS75 KBYZ 210450  
FWSBYZ  
 
SPOT FORECAST FOR WINDMILL FIRE...CFR  
NATIONAL WEATHER SERVICE BILLINGS MT  
1050 PM MDT THU AUG 20 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 2300 MDT ON AUGUST 20.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
EXPECT NORTHERLY WINDS OVERNIGHT AT THE FIRE SITE FROM 8-11  
MPH...BECOMING 5-8 MPH LATE. OVERNIGHT RH IS EXPECTED TO RECOVER  
TO THE 40S RANGE LATE. SKIES WILL BE PARTLY CLOUDY AND HAZY FROM  
SMOKE. BT  
 
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....58-63.  
MAX HUMIDITY........43-49 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS (8-11 EARLY...5-8 MPH LATE)...PRIMARILY FROM THE NORTH.  
RIDGETOP...........WEST AROUND 5-10 MPH.  
MIXING HEIGHT.......500 FT AGL EARLY IN THE EVENING DECREASING TO  
400 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTH AROUND 7 MPH.  
 

 
FORECASTER...TESAR  
REQUESTED BY...LACY  
TYPE OF REQUEST...WILDFIRE  
.TAG 2620154.0/BYZ  
.DELDT 08/20/26  
.FORMATTERVERSION 2.0.0  
.EMAIL NDYLACY@YAHOO.COM  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab MT Page
The Nexlab WY Page Main Text Page