392  
FNUS75 KBYZ 090920  
FWSBYZ  
 
SPOT FORECAST FOR EAST SIDE FIRE...CARBON COUNTY MT  
NATIONAL WEATHER SERVICE BILLINGS MT  
320 AM MDT SAT MAY 9 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0700 MDT ON MAY 09.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
A WEATHER DISTURBANCE ALOFT WILL MOVE ACROSS THE REGION TODAY.  
HOWEVER THE BEST CHANCE OF PRECIPITATION WILL REMAIN MAINLY EAST  
OVER THE PLAINS. SNOW LEVELS MAY DROP AS LOW AS 7600 FT EARLY  
TODAY BEFORE CLIMBING AGAIN DURING THE DAY. LITTLE IF ANY SNOWFALL  
ACCUMULATION IS EXPECTED. THE CHANCE OF EVEN 0.10 INCH OF LIQUID  
ON THE FIRE SITE IS LESS THAN 5%. LOOK FOR GUSTY NORTHWEST  
WINDS TO PREVAIL TODAY. HUMIDITY READINGS WILL REMAIN ABOVE 30%.  
WARMER AND DRIER CONDITIONS ARE EXPECTED FOR THE COMING WEEK. BT  
 
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SNOW SHOWERS IN  
THE MORNING. SLIGHT CHANCE OF RAIN SHOWERS  
THROUGH THE DAY.  
CWR.................2 PERCENT.  
CHANCE OF LIGHTNING.2 PERCENT.  
MAX TEMPERATURE.....48-53.  
MIN HUMIDITY........40-47 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 6 TO 12 MPH WITH GUSTS TO  
AROUND 25 MPH.  
RIDGETOP...........NORTHWEST AROUND 20 MPH.  
MIXING HEIGHT.......600 FT AGL EARLY IN THE MORNING INCREASING TO  
6700 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST AROUND 14 MPH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....36-40.  
MAX HUMIDITY........63-72 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO  
AROUND 19 MPH IN THE EVENING BECOMING LIGHT.  
RIDGETOP...........NORTHWEST AROUND 15 MPH.  
MIXING HEIGHT.......4400 FT AGL EARLY IN THE EVENING DECREASING TO  
500 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTHWEST AROUND 11 MPH.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....61-65.  
MIN HUMIDITY........26-31 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 18  
MPH.  
RIDGETOP...........WEST AROUND 10 MPH.  
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING INCREASING TO  
7500 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST AROUND 13 MPH.  
 

 
FORECASTER...TESAR  
REQUESTED BY...BILLINGS DISPATCH  
TYPE OF REQUEST...WILDFIRE  
.TAG 2611877.11/BYZ  
.DELDT 05/09/26  
.FORMATTERVERSION 2.0.0  
.EMAIL DOUGLAS.ZIMMER@USDA.GOV,CALLEN@CARBONMT.GOV,MTBDC@FIRENET.GOV  
 
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