401  
FNUS75 KBYZ 041549  
FWSBYZ  
 
SPOT FORECAST FOR WILDHORSE...BLM  
NATIONAL WEATHER SERVICE BILLINGS MT  
849 AM MST TUE NOV 4 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON NOVEMBER 06.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
DRY AND BREEZY CONDITIONS ARE FORECAST AT THE SITE ON THURSDAY,  
WITH WEST WINDS GUSTING IN THE 20S TO 30 MPH. WINDS WILL WEAKEN  
THROUGH THURSDAY NIGHT. EXPECT SIMILAR BUT LESS BREEZY CONDITIONS  
ON FRIDAY. THERE IS A LOW CHANCE (AROUND 25%) FOR SHOWERS LATE  
FRIDAY AFTERNOON/EARLY EVENING. EXPECT MODERATE MIXING FOR BOTH  
DAYS. MATOS  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....58-62.  
MIN HUMIDITY........29-35 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 11 TO 17 MPH WITH GUSTS UP TO 30 MPH.  
MIXING HEIGHT.......INCREASING TO 7000 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST 25 TO 30 MPH DECREASING TO 17 TO 22 MPH  
LATE IN THE AFTERNOON.  
 
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........45 45 30 30 30 27 27 27 27  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0  
TEMP............51 55 57 59 60 60 59 57 55  
RH..............55 49 42 38 33 29 30 34 38  
20 FT WIND DIR..W W W W W W W W W  
20 FT WIND SPD..9 9 12 14 16 16 15 14 12  
20 FT WIND GUST.18 18 22 24 28 27 25 23 21  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....33-37.  
MAX HUMIDITY........63-67 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WEST WINDS 7 TO 11 MPH. GUSTS UP TO 21 MPH IN  
THE EVENING AND OVERNIGHT.  
MIXING HEIGHT.......DECREASING TO 500 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....WEST 16 TO 21 MPH.  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........27 27 26 26 26 17 17 17 18 18 18 24  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............53 51 49 48 46 45 44 42 41 39 37 36  
RH..............40 41 43 45 47 49 51 53 55 58 61 63  
20 FT WIND DIR..W W W W W W W W W W W W  
20 FT WIND SPD..11 11 10 10 10 9 9 9 8 8 8 5  
20 FT WIND GUST.21 20 18 18 18 17 17 17 14 14 14 10  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY.  
CHANCE OF RAIN SHOWERS LATE IN THE AFTERNOON.  
CWR.................5 PERCENT.  
CHANCE OF LIGHTNING.3 PERCENT.  
MAX TEMPERATURE.....52-56.  
MIN HUMIDITY........37-42 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH, WITH GUSTS TO  
AROUND 15 MPH.  
MIXING HEIGHT.......INCREASING TO 5100 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
 
TIME (MST) 6 AM 9 AM NOON 3 PM  
SKY (%).........24 38 43 49  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0  
TEMP............36 42 53 53  
RH..............66 60 42 38  
20 FT WIND......W 5G10 SW 5G8 SW 7G12 SW 10G16  
 

 
FORECASTER...MATOS  
REQUESTED BY...JARID GIBSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2524957.1/BYZ  
.DELDT 11/04/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JGIBSON@BLM.GOV  
 
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