798  
FNUS75 KBYZ 132210  
FWSBYZ  
 
SPOT FORECAST FOR ELK CREEK...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
410 PM MDT WED MAY 13 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON MAY 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
AHEAD OF A COLD FRONT, THERE IS A 30% CHANCE OF SHOWERS AND A 15%  
CHANCE OF THUNDERSTORMS BETWEEN 1800 AND 2200 MDT, WITH A 15% CHANCE  
OF SHOWERS LINGERING THROUGH 0200 MDT. ANY NEARBY SHOWERS OR STORMS  
WILL HAVE THE POTENTIAL TO GENERATE GUSTY, ERRATIC WINDS OF 35 TO 50  
MPH. BEHIND THE FRONT, WINDS WILL TURN OUT OF THE WEST TO NORTHWEST.  
GUSTS WILL GENERALLY BE 30 TO 40 MPH, WITH A 20% CHANCE FOR A GUST  
GREATER THAN 50 MPH THROUGH THE DAY THURSDAY. THURSDAY WILL BE DRY  
UNDER MOSTLY CLEAR SKIES.  
   
THIS AFTERNOON
 
 
SKY/WEATHER.........SUNNY BECOMING MOSTLY CLOUDY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.2 PERCENT.  
MAX TEMPERATURE.....92-96.  
MIN HUMIDITY........9-13 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25  
MPH.  
RIDGETOP...........SOUTH 15 TO 25 MPH.  
MIXING HEIGHT.......15400 FT AGL.  
TRANSPORT WINDS.....SOUTH 15 TO 25 MPH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN  
ISOLATED RAIN SHOWERS OVERNIGHT. SHOWERS AND  
THUNDERSTORMS MAY PRODUCE GUSTY, ERRATIC WINDS.  
CWR.................10 PERCENT.  
CHANCE OF LIGHTNING.15 PERCENT.  
MIN TEMPERATURE.....49-53.  
MAX HUMIDITY........44-48 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25  
MPH SHIFTING TO THE NORTHWEST 12 TO 18 MPH  
OVERNIGHT WITH GUSTS UP TO 35 MPH.  
RIDGETOP...........SOUTH 15 TO 25 MPH SHIFTING TO NORTHWEST 25 TO  
35 MPH.  
MIXING HEIGHT.......DECREASING TO 500 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....SOUTH 15 TO 25 MPH SHIFTING TO NORTHWEST 25 TO  
35 MPH.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....69-73.  
MIN HUMIDITY........11-15 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 40  
MPH.  
RIDGETOP...........WEST 30 TO 40 MPH.  
MIXING HEIGHT.......INCREASING TO 10500 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST 30 TO 40 MPH.  
 

 
FORECASTER...ARCHER  
REQUESTED BY...KELSEY  
TYPE OF REQUEST...WILDFIRE  
.TAG 2613593.0/BYZ  
.DELDT 05/13/26  
.FORMATTERVERSION 2.0.0  
.EMAIL MTMCC@FIRENET.GOV  
 
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