198  
FNUS75 KPSR 171726  
FWSPSR  
 
SPOT FORECAST FOR TOWER FIRE...DFFM  
NATIONAL WEATHER SERVICE PHOENIX AZ  
1026 AM MST WED JUL 17 2019  
 
FORECAST IS BASED ON FORECAST START TIME OF 1100 MST ON JULY 17.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
WIND SPEEDS AND DIRECTION WILL BE THE PRIMARY CONCERN FOR TODAY. THE  
WINDS WILL FAVOR A GENERAL SOUTHERLY DIRECTION THIS MORNING BEFORE BECOMING  
SOUTH-SOUTHWESTERLY IN THE EARLY AFTERNOON. THE WIND SPEEDS ARE ALREADY  
GUSTING AT 10-20 MPH AND WILL STRENGTHEN UP TO 20-25 MPH LATER TODAY,  
SUBSIDING AROUND SUNSET. ANY EXPOSED HILLTOPS MAY SEE GUSTS SLIGHTLY STRONGER.  
HUMIDITY VALUES WILL DROP INTO THE 15-20% RANGE BY THIS AFTERNOON AND REBOUND  
TO NEAR 30% OVERNIGHT. THE CHANCE OF ANY STORMS OVER THE FIRE AREA ARE VERY  
LIMITED AND QUITE UNLIKELY. THERE IS SLIGHT POTENTIAL FOR STORMS TO DEVELOP  
NORTH OVER YAVAPAI COUNTY THIS AFTERNOON WHICH COULD HAVE THE POTENTIAL FOR  
PRODUCING OUTFLOW WINDS OUT OF THE NORTH. MIXING HEIGHTS WILL IMPROVE WITH DAYTIME  
HEATING TO OVER 7000 FEET AND THE HAINES INDEX WILL BE 2-3 INDICATING LOW  
POTENTIAL FOR ANY FIRE TO BECOME PLUME DOMINATED.  
 
FOR THURSDAY, CONDITIONS ARE LOOKING TYPICAL WITH VERY LITTLE CHANCE FOR ANY  
STORMS OR OUTFLOWS AT THIS TIME. THE WINDS WILL ALSO BE MUCH WEAKER.  
   
..THUNDERSTORMS IMPLY GUSTY WINDS
 
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
CWR.................0 PERCENT.  
MAX TEMPERATURE.....103-107.  
MIN HUMIDITY........15-20 PCT.  
WIND (20 FT)........SOUTH WINDS 10 TO 17 MPH WITH GUSTS TO AROUND  
20 MPH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CWR.................0 PERCENT.  
MIN TEMPERATURE.....77-81.  
MAX HUMIDITY........32-37 PCT.  
WIND (20 FT)........SOUTH WINDS 5 TO 13 MPH. GUSTS UP TO 25 MPH THROUGH  
THE EVENING AND CALMING AFTER SUNSET.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CWR.................0 PERCENT.  
MAX TEMPERATURE.....102-106.  
MIN HUMIDITY........10-15 PCT.  
WIND (20 FT)........SOUTH WINDS 5 TO 13 MPH.  
 

 
FORECASTER...AD  
REQUESTED BY...IC TRAINEE HARVEY  
TYPE OF REQUEST...WILDFIRE  
.TAG 1912364.0/PSR  
.DELDT 07/17/19  
.EMAIL AIDCLOGISTICS@DFFM.AZ.GOV  
 
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