651  
FNUS75 KBYZ 251414  
FWSBYZ  
 
SPOT FORECAST FOR BREAKS 2...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
814 AM MDT SUN JUN 25 2017  
 
FORECAST IS BASED ON REQUEST TIME OF 0900 MDT ON JUNE 25.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
..WARM WITH LOW HUMIDITY TODAY AND ESPECIALLY MONDAY
 
 
   
..A COLD FRONTAL PASSAGE TUESDAY
 
 
   
DISCUSSION
 
 
A COUPLE OF WARM AND DRY DAYS ARE AHEAD. TEMPERATURES WILL  
MODERATE FROM AROUND 80 TODAY TO AROUND 90 MONDAY. HUMIDITY LEVELS  
WILL BE LOW WITH AFTERNOON READINGS IN THE TEENS TO AROUND 20  
PERCENT. WINDS WILL BE LIGHT AND VARIABLE AND FOLLOW TERRAIN  
INFLUENCES THIS MORNING. WINDS SHOULD TURN MORE TO THE NORTHWEST  
THIS AFTERNOON. WINDS WILL TURN TO THE EAST TONIGHT WITH  
INCREASING SOUTHEAST WINDS MONDAY. A COLD FRONT WILL PUSH INTO THE  
SITE ON TUESDAY, BRINGING GUSTY NORTHWEST WINDS IN THE AFTERNOON  
AND EVENING, ALONG WITH A CHANCE OF THUNDERSTORMS. TWH  
   
TODAY
 
 
SKY/WEATHER.........SUNNY.  
LAL.................1...NO THUNDERSTORMS.  
MAX TEMPERATURE.....76-81.  
MIN HUMIDITY........17-22 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......VARIABLE THIS MORNING. WINDS BECOMING  
NORTHWEST WINDS 6 TO 14 MPH BY AFTERNOON.  
RIDGETOP...........SOUTHWEST 5 TO 10 MPH THIS MORNING.  
NORTHWEST 5 TO 15 MPH THIS AFTERNOON.  
HAINES INDEX........3.  
CWR.................0 PERCENT.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
LAL.................1...NO THUNDERSTORMS.  
MIN TEMPERATURE.....50-55.  
MAX HUMIDITY........59-64 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 6 TO 14 MPH.  
RIDGETOP...........EAST 10 TO 20 MPH.  
CWR.................0 PERCENT.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
LAL.................1...NO THUNDERSTORMS.  
MAX TEMPERATURE.....86-91.  
MIN HUMIDITY........15-20 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHEAST WINDS 8 TO 16 MPH. GUSTS  
TO 22 MPH IN THE AFTERNOON.  
RIDGETOP...........EAST 10 TO 20 MPH.  
HAINES INDEX........4.  
CWR.................0 PERCENT.  
 

 
FORECASTER...HUMPHREY  
REQUESTED BY...IC  
TYPE OF REQUEST...WILDFIRE  
.TAG 1711583.0/BYZ  
.EMAIL BLM_MT_MCC@BLM.GOV  
 
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