518  
FNUS75 KFGZ 221052  
FWSFGZ  
 
SPOT FORECAST FOR BLACK MESA...BLM  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
352 AM MST THU AUG 22 2019  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 MST ON AUGUST 22.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION
 
BREEZY SOUTHWEST WINDS CAN BE EXPECTED OVER THE  
NEXT COUPLE OF DAYS, WITH THE STRONGEST WINDS TODAY. DAYTIME  
TEMPERATURES WILL BE SLIGHTLY COOLER THAN WE HAVE SEEN RECENTLY.  
CUMULUS BUILDUPS ARE POSSIBLE EACH DAY, BUT NO PRECIPITATION IS  
EXPECTED. MOISTURE WILL INCREASE SOME TONIGHT AND FRIDAY, WITH  
HIGHER MINIMUM RELATIVE HUMIDITY VALUES FRIDAY AFTERNOON.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....99 TO 101.  
MIN HUMIDITY........10 TO 15 PERCENT.  
WIND (20 FT)........SOUTH 5 TO 8 MPH BECOMING SOUTHWEST 10 TO 15  
MPH WITH GUSTS 20 TO 25 MPH AFTER 11 AM.  
LAL.................1.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MAX VENT RATE.......EXCELLENT.  
CLEARING INDEX......1747.  
MIXING HEIGHT.......10000 FT AGL.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH BECOMING SOUTHWEST 15 TO  
20 MPH AFTER 11 AM.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....70 TO 72.  
MAX HUMIDITY........50 TO 55 PERCENT.  
WIND (20 FT)........SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 20 MPH  
BECOMING VARIABLE 4 TO 7 MPH AFTER 9 PM.  
LAL.................1.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIN VENT RATE.......POOR.  
CLEARING INDEX......2.  
MIXING HEIGHT.......1900 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH BECOMING SOUTH 5 TO 10  
MPH AFTER 9 PM.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....96 TO 98.  
MIN HUMIDITY........20 TO 25 PERCENT.  
WIND (20 FT)........SOUTH 5 TO 8 MPH BECOMING SOUTHWEST 10 TO 12  
MPH AFTER 11 AM. HIGHER GUSTS TO 15 TO 20 MPH  
POSSIBLE IN THE AFTERNOON.  
LAL.................1.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MAX VENT RATE.......EXCELLENT.  
CLEARING INDEX......1390.  
MIXING HEIGHT.......9600 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH INCREASING TO 15 TO 20 MPH AFTER  
11 AM.  
 

 
FORECASTER...STEFFEN  
REQUESTED BY...CARLOS PAYAN  
TYPE OF REQUEST...WILDFIRE  
.TAG 1914178.0/FGZ  
.DELDT 08/22/19  
.FORMATTERVERSION 1.0.26  
.EMAIL AZPDC@FIRENET.GOV  
 
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