917  
FNUS75 KBYZ 170129  
FWSBYZ  
 
SPOT FORECAST FOR TRAIL CREEK...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
729 PM MDT WED AUG 16 2017  
 
FORECAST IS BASED ON REQUEST TIME OF 2000 MDT ON AUGUST 16.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
..RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY
 
 
   
DISCUSSION
 
 
EXPECT WINDS OVERNIGHT TO REMAIN BREEZY AT THE FIRE SITE. A LOW  
LEVEL JET WILL KEEP THE RIDGE-TOP WINDS 10 TO 20 MPH, AND WILL  
KEEP RELATIVE HUMIDITY RECOVERIES BETWEEN 50 TO 55 PERCENT.  
TOMORROW A COLD FRONT WILL MOVE ACROSS THE FIRE SITE LATE IN THE  
AFTERNOON. THIS WILL SHIFT WINDS FROM WEST TO THE NORTHWEST,  
BECOMING GUSTY UP TO 25 MPH. RELATIVE HUMIDITY VALUES WILL ALSO  
DROP INTO THE TEENS. ALONG THE FRONT, THERE COULD BE ISOLATED  
THUNDERSTORMS. WINDS WILL REMAIN GUSTY THROUGH THE EVENING BEFORE  
BECOMING LIGHT AFTER MIDNIGHT. FRIDAY WILL BE LESS WINDY, BUT  
STILL HOT AND DRY. REIMER  
 
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
LAL.................1...NO THUNDERSTORMS.  
MIN TEMPERATURE.....57-62.  
MAX HUMIDITY........50-55 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 8 TO 12 MPH.  
RIDGETOP...........SOUTHWEST 10 TO 20 MPH.  
CWR.................0 PERCENT.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY. ISOLATED RAIN SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.  
MAX TEMPERATURE.....87-92.  
MIN HUMIDITY........13-18 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 5 TO 15 MPH...BECOMING NORTHWEST  
DURING LATE AFTERNOON. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.  
RIDGETOP...........WEST 15 TO 25 MPH, BECOMING NORTHWEST  
DURING LATE AFTERNOON.  
HAINES INDEX........6.  
CWR.................0 PERCENT.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
LAL.................1...NO THUNDERSTORMS.  
MIN TEMPERATURE.....52-57.  
MAX HUMIDITY........45-50 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 10 TO 15 MPH...BECOMING  
EAST AT 5 TO 10 MPH AFTER MIDNIGHT.  
RIDGETOP...........NORTHWEST 10 TO 20 MPH...BECOMING  
NORTHEAST AT 10 TO 15 MPH AFTER  
MIDNIGHT.  
CWR.................0 PERCENT.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY.  
LAL.................1...NO THUNDERSTORMS.  
MAX TEMPERATURE.....88-93.  
MIN HUMIDITY........15-20 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH.  
RIDGETOP...........WEST 5 TO 15 MPH.  
HAINES INDEX........6.  
CWR.................0 PERCENT.  
 

 
 
FORECASTER...REIMER  
REQUESTED BY...RYAN REINEKE  
TYPE OF REQUEST...WILDFIRE  
.TAG 1714489.0/BYZ  
.EMAIL MILESCITYDISPATCH@GMAIL.COM  
 
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