117  
FNUS75 KSLC 261708  
FWSSLC  
 
SPOT FORECAST FOR WIDEMOUTH 2...USFS  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
1108 AM MDT SAT SEP 26 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0800 MDT ON SEPTEMBER 27.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
INCREASING SOUTHERLY FLOW ACROSS THE REGION IS  
EXPECTED TO BRING AN INFLUX OF MOISTURE ASSOCIATED WITH TWO  
TROPICAL SYSTEMS SUNDAY INTO EARLY NEXT WEEK. CHANCES FOR SHOWERS  
AND THUNDERSTORMS BEGIN AS EARLY AS SUNDAY AFTERNOON, THOUGH  
COVERAGE WILL BE MORE ISOLATED. MORE WIDESPREAD SHOWERS AND  
THUNDERSTORMS ARE EXPECTED MONDAY AFTERNOON INTO EARLY TUESDAY.  
THE BURN SCAR WILL REMAIN ON THE FRINGES OF DEEPEST MOISTURE, AND  
GREATEST INSTABILITY WILL BE FOCUSED ACROSS SOUTHEAST UTAH. AS  
SUCH, THE WEATHER PREDICTION CENTER HAS LIMITED THE HEAVY RAINFALL  
AND FLASH FLOOD RISK ON MONDAY ACROSS THE AREA TO A MARGINAL  
(LEVEL 1 OF 4) RISK. MAIN TIMEFRAME OF CONCERN WILL BE MONDAY  
AFTERNOON INTO THE EVENING AS COVERAGE AND INTENSITY OF STORMS  
PEAKS ACROSS THE AREA.  
   
SUNDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER) THEN  
BECOMING PARTLY CLOUDY (40-50 PERCENT CLOUD  
COVER). SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS AFTER 1400.  
CWR.................5 PERCENT.  
CHANCE OF PCPN......30 PERCENT.  
CHANCE OF LIGHTNING.15 PERCENT.  
MAX TEMPERATURE.....79-82.  
MIN HUMIDITY........26-29 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 3 TO 10 MPH BECOMING SOUTHWEST  
7 TO 13 MPH WITH GUSTS TO AROUND 25 MPH IN THE  
AFTERNOON. GUSTY OUTFLOW WINDS TO 35 MPH NEAR  
THUNDERSTORMS.  
MIXING HEIGHT.......10200 FT AGL (70-80TH PERCENTILE).  
TRANSPORT WINDS.....SOUTHWEST 15 TO 17 MPH.  
   
SUNDAY NIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER).  
SLIGHT CHANCE OF RAIN SHOWERS OVERNIGHT.  
CWR.................0 PERCENT.  
CHANCE OF PCPN......20 PERCENT.  
CHANCE OF LIGHTNING.6 PERCENT.  
MIN TEMPERATURE.....55-58.  
MAX HUMIDITY........70-73 PERCENT.  
WIND (20 FT)........SOUTH WINDS 3 TO 10 MPH. GUSTS UP TO 20 MPH  
THROUGH 0400.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....SOUTH 13 TO 17 MPH.  
   
MONDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT CLOUD COVER). RAIN  
SHOWERS LIKELY AFTER 1200, WITH A 25 TO 30 PERCENT  
CHANCE FOR THUNDERSTORMS.  
CWR.................75 PERCENT.  
CHANCE OF PCPN......80 PERCENT.  
CHANCE OF LIGHTNING.26 PERCENT.  
MAX TEMPERATURE.....AROUND 70.  
MIN HUMIDITY........69-72 PERCENT.  
WIND (20 FT)........SOUTH WINDS 2 TO 8 MPH BECOMING WEST 4 TO 8 MPH  
IN THE AFTERNOON. GUSTY OUTFLOW WINDS TO 45 MPH  
NEAR THUNDERSTORMS.  
MIXING HEIGHT.......6100 FT AGL (40-50TH PERCENTILE).  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
 
 
FORECASTER...WHITLAM  
REQUESTED BY...LANDON ROWLEY  
TYPE OF REQUEST...WILDFIRE  
.TAG 2622567.0/SLC  
.DELDT 09/26/26  
.FORMATTERVERSION 2.0.0  
.EMAIL LSROWLEY@UTAH.GOV  
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