960  
FNUS75 KBYZ 181010  
FWSBYZ  
 
SPOT FORECAST FOR NORTH HEBGEN HAND PILES RX...USFS  
NATIONAL WEATHER SERVICE BILLINGS MT  
310 AM MST TUE NOV 18 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON NOVEMBER 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
A FEW SPRINKLES OR A LIGHT SHOWER ARE POSSIBLE OVER THE BURN SITE  
TODAY. CHANCE OF WETTING PRECIP IS UNDER 10 PERCENT. MOSTLY  
CLOUDY WITH AREAS OF FOG TONIGHT AND A SLIGHT CHANCE OF LIGHT RIAN  
OR FREEZING RAIN. MUCH BETTER CHANCE OF RAIN/SNOW SHOWER BY WED  
AFTERNOON. WINDS THROUGH THE PERIOD WILL BE LIGHT AND COMMONLY  
FROM THE SOUTH/SOUTHWEST. BT  
   
TODAY
 
 
SKY/WEATHER.........VARIABLE CLOUDS AND A SPRINKLE POSSIBLE. AREAS OF MORNING FOG.  
CWR.................3 PERCENT.  
MAX TEMPERATURE.....42-47.  
MIN HUMIDITY........59-67 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT SOUTHWEST WINDS COMMON UNDER 10 MPH.  
RIDGETOP...........SOUTHWEST AROUND 10-15 MPH.  
MIXING HEIGHT.......1600 FT AGL EARLY IN THE MORNING INCREASING TO  
4100 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 7 TO 12 MPH.  
 
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........93 85 87 82 81 84 83 87 82  
WEATHER COV.....ARS SLGHT  
WEATHER TYPE....FOG RW/SW  
TEMP............34 36 38 41 42 42 43 42 40  
RH..............96 88 84 77 69 66 65 66 74  
20 FT WIND DIR..S S SW SW SW SW SW SW SW  
20 FT WIND SPD..2 2 3 4 5 5 5 3 2  
20 FT WIND GUST.5 6 7 10 10 10 10 10 7  
 
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF LIGHT  
FREEZING RAIN EARLY IN THE MORNING.  
CWR.................4 PERCENT.  
MIN TEMPERATURE.....23-27.  
MAX HUMIDITY........92-98 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS.  
RIDGETOP...........SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1100 FT AGL.  
TRANSPORT WINDS.....SOUTH 5 TO 7 MPH.  
 
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........82 87 80 71 80 77 85 82 73 84 89 87  
WEATHER COV..... PTY PTY PTY PTY PTY PTY ARS ARS ARS ARS  
WEATHER TYPE.... FOG FOG FOG FOG FOG FOG FOG FOG FOG FOG  
TSTM COV........  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............38 35 33 32 31 30 30 29 29 28 27 27  
RH..............82 87 92 95 98 97 97 100 99 100 100 100  
20 FT WIND DIR..S SE SE E SE E SE SE E SE SE SE  
20 FT WIND SPD..2 2 2 2 2 2 2 1 1 1 1 1  
20 FT WIND GUST.6 6 6 5 5 6 5 4 2 2 2 2  
 
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. AREAS OF FOG EARLY IN THE  
MORNING, SLIGHT CHANCE OF LIGHT FREEZING RAIN IN THE  
MORNING. CHANCE OF RAIN SHOWERS AND SNOW  
SHOWERS THROUGH THE DAY.  
CWR.................8 PERCENT.  
MAX TEMPERATURE.....39-45.  
MIN HUMIDITY........58-65 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS.  
RIDGETOP...........SOUTHWEST 10 TO 15 MPH.  
MIXING HEIGHT.......1100 FT AGL EARLY IN THE MORNING INCREASING TO  
3800 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 9 MPH.  
 
TIME (MST) 6 AM 9 AM NOON 3 PM  
SKY (%).........91 81 77 67  
WEATHER COV.....AREAS S CHC CHANCE CHANCE  
WEATHER TYPE....FOG SN/FG RNSN RNSHWR  
TSTM COV........  
CHC OF LTNG (%).0 0 10 10  
TEMP............27 32 41 43  
RH..............99 98 71 62  
20 FT WIND......E 1G4 S 1G5 SW 4G9 SW 4G10  
 
 

 
FORECASTER...TESAR  
REQUESTED BY...ZACHARIAH SACHS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2526194.0/BYZ  
.DELDT 11/18/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JAMES.M.RAY@USDA.GOV,ZACHARIAH.SACHS@USDA.GOV,BRECK.KLEIN@USDA.GOV  
 
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