485  
FNUS75 KFGZ 101158  
FWSFGZ  
 
SPOT FORECAST FOR WALLOW WEST UNIT 4...USFS  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
458 AM MST FRI MAY 10 2024  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON MAY 10.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION
 
AFTERNOON HIGH TEMPERATURES SLIGHTLY BELOW NORMAL WILL CONTINUE  
TODAY AND TOMORROW. MOSTLY SUNNY SKIES SHOULD PREVAIL, WITH POSSIBLE BRIEF HIGH  
CLOUDS IN THE AFTERNOON. WINDS WILL GENERALLY BE OUT OF THE SOUTHWEST  
BETWEEN 10-15 MPH, GUSTING NEAR 25 MPH DURING THE AFTERNOON. LIGHT AND VARIABLE  
WINDS EXPECTED DURING THE OVERNIGHT PERIOD. MINIMUM RH VALUES WILL BE BETWEEN 10-15%  
EACH AFTERNOON.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........10-15 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 10 TO 15 MPH, GUSTING UP TO 25 MPH.  
LAL.................1.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MAX VENT RATE.......EXCELLENT.  
CLEARING INDEX......2055.  
MIXING HEIGHT.......10600 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 KNOTS.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 32.  
MAX HUMIDITY........40-47 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH IN THE EVENING  
BECOMING LIGHT AND VARIABLE OVERNIGHT.  
LAL.................1.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIN VENT RATE.......POOR.  
CLEARING INDEX......1.  
MIXING HEIGHT.......0 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 KNOTS SHIFTING TO THE WEST  
AROUND 0 KNOTS OVERNIGHT, THEN SHIFTING TO THE  
NORTH AFTER 3 AM.  
   
SATURDAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 64.  
MIN HUMIDITY........10-15 PERCENT.  
WIND (20 FT)........WEST-SOUTHWEST WINDS 10 TO 15 MPH, GUSTING NEAR 25 MPH.  
LAL.................1.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MAX VENT RATE.......EXCELLENT.  
CLEARING INDEX......2496.  
MIXING HEIGHT.......11900 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 KNOTS SHIFTING TO THE WEST  
AROUND 20 KNOTS IN THE AFTERNOON.  
 

 
FORECASTER...KONIECZNY  
REQUESTED BY...CHRISTINA BRANNON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2413640.0/FGZ  
.DELDT 05/10/24  
.FORMATTERVERSION 2.0.0  
.EMAIL CHRISTINA.BRANNON@USDA.GOV  
 
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