989  
FNUS75 KSLC 182337  
FWSSLC  
 
SPOT FORECAST FOR FRANCIS  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
537 PM MDT WED SEP 18 2019  
   
DISCUSSION
 
 
ONCE AGAIN HAVE DEVELOPED GUSTY SOUTH SOUTHEAST WINDS AHEAD OF  
THE NEXT APPROACHING COLD FRONT. AS OF NOW, IT APPEARS THE COLD  
FRONT WILL CROSS THE WILDFIRE SITE JUST AFTER MID-AFTERNOON  
THURSDAY. EXPECT AN INCREASING THREAT OF SHOWERS AND THUNDERSTORMS  
THEREAFTER, PEAKING LATE THURSDAY NIGHT AND FRIDAY.  
 
TEMPERATURES WILL TREND COOLER, AS RH VALUES RISE WITH THE COLD  
FRONTAL PASSAGE TOMORROW. A WARMING AND DRYING TREND IS  
ANTICIPATED THIS WEEKEND, WITH BENIGN WEATHER AND LIGHT/TERRAIN  
DICTATED WINDS.  
 
NOTE THAT THE NAME OF THE FIRE WAS CORRECTED. MOVED THE SITE  
FURTHER NORTH BASED ON SATELLITE FIRE ACTIVITY INFORMATION - AFTER  
CONSULTING WITH NUIFC.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).  
CHANCE OF PCPN......0 PERCENT.  
CWR.................0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....53-55.  
MAX HUMIDITY........41-43%.  
WIND (20 FT)........SOUTHEAST WINDS 10-20 MPH, DECREASING TO 5-15 MPH  
AFTER 0200.  
HAINES INDEX........5 ..MODERATE.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER) THEN  
BECOMING PARTLY SUNNY (50-60 PERCENT CLOUD  
COVER). A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
CWR.................5 PERCENT.  
LAL.................1 UNTIL 1200, THEN 2.  
MAX TEMPERATURE.....70-72.  
MIN HUMIDITY........26-28%.  
WIND (20 FT)........SOUTHEAST 10-15 MPH THROUGH 1000, SHIFTING SOUTH  
SOUTHWEST AND INCREASING TO 10-20 MPH WITH 35 MPH  
GUSTS UNTIL 1300. BETWEEN 1300 AND 1600, WEST  
SOUTHWEST 5-15 MPH WITH 30 MPH GUSTS. NORTHWEST  
10 MPH WITH 20 MPH GUSTS AFTER 1600.  
GUSTY/ERRATIC NEAR SHOWERS.  
HAINES INDEX........4 ..LOW.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT CLOUD COVER). SCATTERED  
RAIN SHOWERS IN THE EVENING. A SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH THE NIGHT. NUMEROUS RAIN  
SHOWERS OVERNIGHT.  
CHANCE OF PCPN......60 PERCENT.  
CWR.................55 PERCENT.  
LAL.................2.  
MIN TEMPERATURE.....44-46.  
MAX HUMIDITY........82-84%.  
WIND (20 FT)........NORTHWEST 5-15 MPH THROUGH 2300, THEN DOWNSLOPE  
5-10 MPH. GUSTY/ERRATIC NEAR SHOWERS.  
 
HAINES INDEX........3 ..VERY LOW.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER).  
OCCASIONAL RAIN IN THE MORNING, THEN SCATTERED  
RAIN SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......70 PERCENT.  
CWR.................65 PERCENT.  
LAL.................1 UNTIL 1200, THEN 2.  
MAX TEMPERATURE.....56-58.  
MIN HUMIDITY........46-48%.  
WIND (20 FT)........DOWNSLOPE 2-6 MPH THROUGH 1000, THEN WEST  
NORTHWEST 10-20 MPH. WINDS SHIFTING TO THE WEST  
AROUND 1200, THEN SOUTHWEST 5-15 MPH AFTER 1600.  
GUSTY/ERRATIC NEAR SHOWERS.  
HAINES INDEX........2 ..VERY LOW.  
 

 
FORECASTER...ROGOWSKI  
REQUESTED BY...GUNNAR GUSH  
TYPE OF REQUEST...WILDFIRE  
.TAG 1915716.0/SLC  
 
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