924  
FNUS75 KSLC 230631  
FWSSLC  
 
SPOT FORECAST FOR SPRUCES CAMPGROUND PILE BURN  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
1231 AM MDT SAT OCT 23 2021  
   
DISCUSSION
 
 
SNOW SHOWERS WILL LINGER TONIGHT, DIMINISHING INTO SUNDAY  
MORNING. A COOLER DAY IS EXPECTED ON SUNDAY BEHIND THE STORM  
SYSTEM THAT MOVES THROUGH ON SATURDAY, WITH WEAK HIGH PRESSURE  
BUILDING OVER THE BURN SITE ON SUNDAY. THIS WILL RESULT IN FAIR  
CLEARING DUE TO DECREASED MIXING AND WINDS. A POTENT STORM SYSTEM  
WILL ARRIVE LATE SUNDAY NIGHT INTO MONDAY. STRONG WINDS MAY  
DEVELOP AS EARLY AS LATE SUNDAY NIGHT BEFORE BECOMING MORE COMMON  
ON MONDAY. A VERY WARM AND WET STORM SYSTEM IS EXPECTED BRING  
MODERATE TO HEAVY PRECIPITATION OVER THE BURN SITE LATE MONDAY  
THROUGH TUESDAY, WITH 1 TO 2 INCHES OF LIQUID LIKELY.  
PRECIPITATION WILL START AS RAIN MONDAY INTO MONDAY EVENING BEFORE  
ENDING AS SNOW INTO TUESDAY.  
   
SATURDAY TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER).  
OCCASIONAL SNOW LATE IN THE EVENING, THEN A  
CHANCE OF SNOW OVERNIGHT.  
CHANCE OF PCPN......60 PERCENT.  
CWR.................35 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 30.  
MAX HUMIDITY........100%.  
WIND (20 FT)........SOUTHWEST WINDS 5-8 MPH.  
HAINES INDEX........2 ..VERY LOW.  
   
SUNDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT CLOUD COVER). A  
SLIGHT CHANCE OF RAIN IN THE AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....45-47.  
MIN HUMIDITY........67-69%.  
WIND (20 FT)........SOUTH WINDS 6-12 MPH.  
CLEARING INDEX......440.  
HAINES INDEX........2 ..VERY LOW.  
   
SUNDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT CLOUD COVER). A  
CHANCE OF RAIN.  
CHANCE OF PCPN......30 PERCENT.  
CWR.................0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 40.  
MAX HUMIDITY........81-83%.  
WIND (20 FT)........SOUTH WINDS 10-15 MPH BECOMING 15-20 MPH WITH  
GUSTS TO AROUND 25 MPH AFTER 3 AM.  
HAINES INDEX........2 ..VERY LOW.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT CLOUD COVER). A  
CHANCE OF RAIN IN THE MORNING, THEN OCCASIONAL  
RAIN IN THE AFTERNOON.  
CHANCE OF PCPN......70 PERCENT.  
CWR.................65 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 50.  
MIN HUMIDITY........63-65%.  
WIND (20 FT)........BREEZY. SOUTH WINDS 15-20 MPH WITH GUSTS TO  
AROUND 30 MPH BECOMING SOUTHWEST 20-25 MPH WITH  
GUSTS TO AROUND 35 MPH LATE IN THE AFTERNOON.  
CLEARING INDEX......1000+.  
HAINES INDEX........2 ..VERY LOW.  
 

 
FORECASTER...CHURCH  
REQUESTED BY...BURN BOSS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2119947.0/SLC  
.DELDT 10/23/21  
.FORMATTERVERSION 1.0.26  
.EMAIL RICHARD.NIELSON@USDA.GOV  
 
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