364  
FNUS75 KSLC 132052  
FWSSLC  
 
SPOT FORECAST FOR WIDEMOUTH 2...FOREST SERVICE  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
252 PM MDT SUN SEP 13 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON SEPTEMBER 14.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
A COLD FRONT CROSSING THE AREA LATE SUNDAY NIGHT WILL  
MAINTAIN A SLIGHT CHANCE OF SHOWERS THROUGH MID-MORNING MONDAY. BEHIND  
THIS FRONT A COOLER AND MORE STABLE AIRMASS WILL SETTLE OVER THE  
FIRE AREA MONDAY AFTERNOON ALLOWING TEMPERATURES TO TREND 10 DEGREES  
COOLER. WEST-NORTHWEST WINDS GUSTING INTO TO 15 TO 25 MPH RANGE CAN  
BE EXPECTED BEHIND THIS FRONT MONDAY AFTERNOON WHILE RH VALUES REMAIN  
IN THE 30 PERCENT RANGE. SOUTHWEST FLOW WILL RETURN TUESDAY ALLOWING  
FOR A WARMING TREND, AS WELL AS AN INCREASE IN SHOWERS AND  
THUNDERSTORMS AROUND THE AREA.  
   
MONDAY  
 
SKY/WEATHER.........PARTLY CLOUDY (50-65 PERCENT CLOUD COVER) WITH A  
SLIGHT CHANCE OF SHOWERS UNTIL 0900, THEN MOSTLY  
SUNNY (10-20 PERCENT CLOUD COVER).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......15 PERCENT.  
CHANCE OF LIGHTNING.5 PERCENT.  
MAX TEMPERATURE.....75-80.  
MIN HUMIDITY........32-38 PERCENT.  
WIND (20 FT)........WEST-NORTHWEST 4-9 MPH. GUSTS 18-25 MPH DURING  
THE AFTERNOON.  
MIXING HEIGHT.......5300 FT AGL (40-50TH PERCENTILE).  
TRANSPORT WINDS.....SOUTHWEST 15 MPH.  
   
MONDAY NIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF LIGHTNING.1 PERCENT.  
MIN TEMPERATURE.....52-57.  
MAX HUMIDITY........60-65 PERCENT.  
WIND (20 FT)........NORTHWEST 3-8 MPH EARLY, BECOMING DOWNSLOPE  
AND DOWN-DRAINAGE 3-7 MPH AFTER 2000.  
MIXING HEIGHT.......FALLING TO 500 FT AGL BY LATE EVENING.  
TRANSPORT WINDS.....EAST 2-5 MPH.  
   
TUESDAY  
 
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER) UNTIL  
1200, THEN PARTLY CLOUDY (40-50 PERCENT CLOUD  
COVER) WITH A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CWR.................2 PERCENT.  
CHANCE OF PCPN......15 PERCENT.  
CHANCE OF LIGHTNING.10 PERCENT.  
MAX TEMPERATURE.....80-85.  
MIN HUMIDITY........32-38 PERCENT.  
WIND (20 FT)........TERRAIN-DRIVEN 3-7 MPH EARLY, BECOMING  
SOUTHWEST 7-12 MPH WITH GUSTS 20-28 MPH AFTER  
1100. GUSTY AND ERRATIC WINDS NEAR  
THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......9400 FT AGL (70-80TH PERCENTILE).  
TRANSPORT WINDS.....SOUTHWEST 15 MPH.  
 
 
FORECASTER...SEAMAN  
REQUESTED BY...SIERRA SAMPSON  
TYPE OF REQUEST...WILDFIRE  
.TAG 2621779.0/SLC  
.DELDT 09/13/26  
.FORMATTERVERSION 2.0.0  
.EMAIL SIERRA.SAMPSON@USDA.GOV  
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