206  
FNUS75 KFGZ 272023  
FWSFGZ  
 
SPOT FORECAST FOR BILLY FIRE, ABOVE 5,000 FT...USFS  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
123 PM MST WED AUG 27 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 MST ON AUGUST 28.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION
 
AN ISOLATED SHOWER THUNDERSTORM IS POSSIBLE BETWEEN  
12PM AND 8PM BOTH THURSDAY AND FRIDAY, OTHERWISE IT WILL BE DRY  
AS WE GO INTO A LOW GRADE MONSOON PATTERN OVER THE NEXT FEW DAYS.  
RESIDUE MOISTURE WILL KEEP RH VALUES IN THE 25-35% RANGE DURING  
THE DAY AND THE 65-75% RANGE AT NIGHT. WINDS WILL BE LIGHT AT 5-10  
MPH, UNLESS A SHOWER OR STORM PASSES OVERHEAD, THEN EXPECT GUSTY  
AND ERRATIC WINDS.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....81-86.  
MIN HUMIDITY........28-32 PERCENT.  
WIND (20 FT)........NE 5 MPH SHIFTING SW-W 5-10 MPH BETWEEN 10AM AND 12PM.  
GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
MIXING HEIGHT.......10000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 KNOTS SHIFTING TO THE  
SOUTHEAST LATE IN THE MORNING, THEN SHIFTING TO  
THE SOUTHWEST IN THE AFTERNOON.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
CHANCE OF PCPN......10 PERCENT.  
MIN TEMPERATURE.....68-72.  
MAX HUMIDITY........46-53 PERCENT.  
WIND (20 FT)........NW-N 5 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......100 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 KNOTS SHIFTING TO THE NORTHWEST  
AFTER 3 AM.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....81-86.  
MIN HUMIDITY........30-34 PERCENT.  
WIND (20 FT)........NW 5 MPH, W 5 TO 10 MPH AFTER 10AM-12PM.  
MIXING HEIGHT.......8200 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 KNOTS.  
 
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=33.7703&LON=-110.9581&CLAT=33.7703&CLON=-110.9581  
 

 
FORECASTER...BERNHART  
REQUESTED BY...TOM STEVENS  
TYPE OF REQUEST...WILDFIRE  
.TAG 2520836.0/FGZ  
.DELDT 08/27/25  
.FORMATTERVERSION 2.0.0  
.EMAIL TOM_STEVENS@FIRENET.GOV  
 
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