509  
FNUS75 KBYZ 131206  
FWSBYZ  
 
SPOT FORECAST FOR ACROSS CORRALS RX...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
506 AM MST THU NOV 13 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 MST ON NOVEMBER 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS OR CONCERNS WITH  
THIS FORECAST.  
   
DISCUSSION
 
 
TODAY WILL BE WARM AND DRY AT THE BURN SITE. HUMIDITY IS EXPECTED  
TO DROP TO NEAR 30%, AND THERE IS A HIGH PROBABILITY (95%) OF RHS  
UNDER 45% BETWEEN 11AM AND 6PM. WINDS WILL BECOME A BIT GUSTY OUT  
OF THE SOUTHWEST THIS AFTERNOON, WITH GUSTS OF 15-20 MPH DURING  
THE PEAK HEATING HOURS. FRIDAY WILL ALSO BE WARM AND DRY, BUT A  
COLD FRONT WILL BRING A CHANCE OF SHOWERS AND BREEZY WINDS BY  
LATE AFTERNOON AND EVENING.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (SCATTERED HIGH CLOUDS).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....61-65.  
MIN HUMIDITY........28-32 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH 4-8 MPH BECOMING SOUTHWEST 6-12 MPH WITH  
GUSTS TO 18 MPH IN THE AFTERNOON.  
RIDGETOP...........SOUTHWEST 8-14 MPH WITH AFTERNOON GUSTS TO 20  
MPH.  
MIXING HEIGHT.......INCREASING TO 2200 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 14 MPH.  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........21 17 12 9 13 30 28 26 29 13 16 16  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............42 41 43 47 51 55 58 61 63 62 60 54  
RH..............68 69 63 53 45 40 37 33 30 32 35 42  
20 FT WIND DIR..S SW SW SW SW SW SW SW SW SW SW S  
20 FT WIND SPD..4 5 6 6 8 8 9 10 9 8 7 6  
20 FT WIND GUST.8 9 11 11 12 13 15 17 16 15 14 12  
 

 
FORECASTER...LESTER  
REQUESTED BY...MATT HARDING  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2525513.2/BYZ  
.DELDT 11/13/25  
.FORMATTERVERSION 2.0.0  
.EMAIL MHARDING@BLM.GOV  
 
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