156  
FNUS75 KFGZ 262205  
FWSFGZ  
 
SPOT FORECAST FOR BILLY FIRE, ABOVE 5,000 FT...USFS  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
233 PM MST TUE AUG 26 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 MST ON AUGUST 27.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION
 
A CHANCE OF THUNDERSTORMS EXISTS FROM 9AM THROUGH  
8PM. STORM COVERAGE WILL NOT BE AS WIDESPREAD AS THE LAST COUPLE  
DAYS. MAIN HAZARDS WILL BE BRIEF HEAVY RAIN, GUSTY WINDS UNDER THE  
STORMS AND OUTFLOW BOUNDARIES 20-30 MPH AHEAD OF SOME STORMS.  
THINGS DRY OUT OVERNIGHT WEDNESDAY INTO THURSDAY MORNING. ON  
THURSDAY AN ISOLATED THUNDERSTORM IS POSSIBLE DURING THE AFTERNOON  
BUT CHANCES WILL BE LOWER ON THURSDAY THAN WEDNESDAY.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....79-83.  
MIN HUMIDITY........36-40 PERCENT.  
WIND (20 FT)........SW-W 5 TO 10 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......9900 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 5 KNOTS SHIFTING TO THE SOUTHWEST  
IN THE LATE MORNING AND AFTERNOON.  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.  
CHANCE OF PCPN......10 PERCENT.  
MIN TEMPERATURE.....68-72.  
MAX HUMIDITY........51-55 PERCENT.  
WIND (20 FT)........NW-N 5 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......100 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 5 KNOTS SHIFTING TO THE NORTH  
AFTER 3 AM.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....81-85.  
MIN HUMIDITY........30-34 PERCENT.  
WIND (20 FT)........NE 5 MPH SHIFTING W 5-10 MPH AFTER 12PM.  
GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......9800 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 KNOTS SHIFTING TO THE SOUTH  
LATE IN THE MORNING, THEN SHIFTING TO THE  
SOUTHWEST IN THE AFTERNOON.  
 
A WEATHER FORECAST TABLE FOR YOUR SPOT LOCATION IS LINKED.  
THE INFORMATION PROVIDED BY THIS SITE IS FOR PLANNING PURPOSES ONLY  
AND IS NOT INTENDED TO SUBSTITUTE INFORMATION PROVIDED BY AN OFFICIAL  
NATIONAL WEATHER SERVICE SPOT FORECAST.  
HTTPS://WWW.WEATHER.GOV/DLH/FWD?LAT=33.7903&LON=-110.9636&CLAT=33.7903&CLON=-110.9636  
 

 
FORECASTER...BERNHART  
REQUESTED BY...TOM STEVENS  
TYPE OF REQUEST...WILDFIRE  
.TAG 2520756.0/FGZ  
.DELDT 08/26/25  
.FORMATTERVERSION 2.0.0  
.EMAIL TOM_STEVENS@FIRENET.GOV  
 
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