521  
FNUS75 KSLC 151153  
FWSSLC  
 
SPOT FORECAST FOR LAKE SLASH PILES...USFS  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
553 AM MDT THU OCT 15 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 MDT ON OCTOBER 15.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
IN THE WAKE OF A DEPARTING LOW PRESSURE SYSTEM,  
ENHANCED NORTHEASTERLY FLOW WILL PERSIST ACROSS THE BURN UNITS  
THROUGHOUT THE DAY AND INTO TONIGHT, WITH GUSTS NEAR 30 MPH AT  
TIMES. WINDS WILL TREND A LITTLE WEAKER FRIDAY AND BECOME EASTERLY  
AS HIGH PRESSURE BUILDS TO THE NORTH OF THE SITE. THESE WINDS WILL  
RESULT IN GOOD TO EXCELLENT VENTILATION BOTH TODAY AND FRIDAY, AND  
BOOST THE CLEARING INDEX WELL ABOVE 500.  
   
TODAY
 
 
SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....50-53.  
MIN HUMIDITY........45-49 PERCENT.  
WIND (20 FT)........NORTHEAST 10-16 MPH WITH GUSTS 25-30 MPH.  
MIXING HEIGHT.......4000 FT AGL (30-40TH PERCENTILE).  
TRANSPORT WINDS.....NORTHEAST 25 MPH.  
CLEARING INDEX......910.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....35-37.  
MAX HUMIDITY........52-54 PERCENT.  
WIND (20 FT)........NORTHEAST 12-18 MPH WITH GUSTS TO 30 MPH.  
MIXING HEIGHT.......600 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 25 MPH.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....52-55.  
MIN HUMIDITY........35-39 PERCENT.  
WIND (20 FT)........EAST 7-12 MPH WITH GUSTS 20-25 MPH.  
MIXING HEIGHT.......4200 FT AGL (30-40TH PERCENTILE).  
TRANSPORT WINDS.....EAST AROUND 20 MPH.  
CLEARING INDEX......710.  
 

 
FORECASTER...SEAMAN  
REQUESTED BY...BODE MECHAM  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2623823.0/SLC  
.DELDT 10/15/26  
.FORMATTERVERSION 2.0.0  
.EMAIL BODE.MECHAM@USDA.GOV  
 
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