702  
FNUS75 KFGZ 160141  
FWSFGZ  
 
SPOT FORECAST FOR GOVERNMENT...AZ-PNF  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
641 PM MST TUE SEP 15 2020  
 
FORECAST IS BASED ON FORECAST START TIME OF 1900 MST ON SEPTEMBER 15.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION
 
DRY AND WARM CONDITIONS WILL PREVAIL OVER THE NEXT  
COUPLE DAYS. WIND SPEEDS WILL GENERALLY REMAIN BELOW 10 MPH WITH  
A SLIGHT INCREASE EXPECTED ON THURSDAY. THE HAINES INDEX WILL BE  
HIGH THROUGH THE PERIOD AT EITHER 5 OR 6.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....55 TO 57.  
MAX HUMIDITY........40 TO 45 PERCENT.  
WIND (20 FT)........SOUTHWEST WIND 5 TO 7 MPH BECOMING NORTH  
6 TO 8 MPH AFTER 8 PM.  
LAL.................1.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIN VENT RATE.......POOR.  
CLEARING INDEX......2.  
MIXING HEIGHT.......900 FT AGL.  
TRANSPORT WINDS.....SOUTH 5 MPH BECOMING NORTH 5 TO 10 MPH AFTER  
8 PM.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....94 TO 96.  
MIN HUMIDITY........9 TO 13 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 6 TO 8 MPH. GUSTS UP TO 15 MPH  
POSSIBLE IN THE AFTERNOON.  
LAL.................1.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MAX VENT RATE.......EXCELLENT.  
CLEARING INDEX......1057.  
MIXING HEIGHT.......13600 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........CLEAR.  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....57 TO 59.  
MAX HUMIDITY........32 TO 37 PERCENT.  
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH.  
LAL.................1.  
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIN VENT RATE.......POOR.  
CLEARING INDEX......1.  
MIXING HEIGHT.......2400 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....94 TO 96.  
MIN HUMIDITY........10 TO 14 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 4 TO 6 MPH BECOMING SOUTH  
10 TO 12 MPH AFTER 11 AM. GUSTS UP TO 20 MPH  
POSSIBLE IN THE AFTERNOON.  
LAL.................1.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MAX VENT RATE.......VERY GOOD.  
CLEARING INDEX......840.  
MIXING HEIGHT.......12800 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 MPH BECOMING SOUTH 5 TO 10 MPH AFTER  
11 AM.  
 

 
FORECASTER...STEFFEN  
REQUESTED BY...BRIAN STEINHARDT IC  
TYPE OF REQUEST...WILDFIRE  
.TAG 2012668.0/FGZ  
.DELDT 09/15/20  
.FORMATTERVERSION 1.0.26  
.EMAIL AZPDC@FIRENET.GOV  
 
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