813  
FNUS75 KFGZ 201343  
FWSFGZ  
 
SPOT FORECAST FOR BEARS FIRE...USFS  
NATIONAL WEATHER SERVICE FLAGSTAFF AZ  
643 AM MST MON AUG 20 2018  
 
FORECAST IS BASED ON REQUEST TIME OF 0700 MST ON AUGUST 20.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ  
   
DISCUSSION
 
MONSOON MOISTURE WILL BE ON THE INCREASE TODAY AND  
TUESDAY. LOOK FOR ISOLATED AFTERNOON THUNDERSTORMS TODAY LEADING TO  
A BETTER CHANCE ON TUESDAY. EXPECT LIGHT SOUTH TO SOUTHWEST WINDS BOTH  
DAYS. IT WILL CONTINUE WARM TODAY BUT WITH A 5 TO 10 DEGREE COOL DOWN ON  
TUESDAY ASSOCIATED WITH THE INCREASE IN MOISTURE.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....AROUND 90.  
MIN HUMIDITY........25 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
LAL.................2.  
HAINES INDEX........3 VERY LOW.  
MAX VENT RATE.......GOOD.  
CLEARING INDEX......651.  
MIXING HEIGHT.......800 FT AGL INCREASING TO 7200 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHANCE OF PCPN......10 PERCENT.  
MIN TEMPERATURE.....AROUND 67.  
MAX HUMIDITY........70 TO 80 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH UNTIL 9:00 PM BECOMING SOUTH  
AT 5 TO 15 MPH. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
LAL.................3.  
HAINES INDEX........3 VERY LOW.  
MIN VENT RATE.......POOR.  
CLEARING INDEX......29.  
MIXING HEIGHT.......3000 FT AGL EARLY IN THE EVENING DECREASING TO  
900 FT AGL IN THE LATE EVENING AND OVERNIGHT.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS.  
CHANCE OF PCPN......40 PERCENT.  
MAX TEMPERATURE.....AROUND 82.  
MIN HUMIDITY........45 PERCENT.  
WIND (20 FT)........SOUTH WINDS AT 5 TO 10 MPH. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
LAL.................3.  
HAINES INDEX........3 VERY LOW.  
MAX VENT RATE.......GOOD.  
CLEARING INDEX......614.  
MIXING HEIGHT.......1400 FT AGL INCREASING TO 8500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH.  
 

 
FORECASTER...MCCOLLUM  
REQUESTED BY...IC  
TYPE OF REQUEST...WILDFIRE  
.TAG 1814771.0/FGZ  
.DELDT 08/20/18  
.EMAIL GSAWYER@FS.FED.US  
 
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