144  
FNUS75 KSLC 262000  
FWSSLC  
 
SPOT FORECAST FOR AHLSTROM  
NATIONAL WEATHER SERVICE SALT LAKE CITY UT  
200 PM MDT WED APR 26 2017  
   
DISCUSSION
 
A SLOW MOVING STORM SYSTEM WILL KEEP A MOIST AND  
UNSTABLE AIRMASS OVER MUCH OF UTAH OVER THE NEXT FEW DAYS. THIS  
MOISTURE AND INSTABILITY WILL PUSH INTO THE BURN SITE LATER THIS  
AFTERNOON THROUGH THIS EVENING, BRINGING A PERIOD OF RAIN AND  
SNOW. THIS PRECIPITATION SHOULD DIMINISH TOMORROW MORNING AS THE  
MOISTURE RETREATS BACK NORTHWARD. AFTER TONIGHT, THE BEST MOISTURE  
AND INSTABILITY WILL REMAIN NORTH OF THE BURN SITE, LIMITING THE  
CHANCE OF PRECIPITATION, BUT KEEPING MIXING GOOD TO EXCELLENT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT CLOUD COVER). A  
CHANCE OF RAIN SHOWERS, SNOW SHOWERS AND A  
SLIGHT CHANCE OF THUNDERSTORMS.  
CHANCE OF PCPN......40 PERCENT.  
CWR.................10 PERCENT.  
LAL.................2.  
MAX TEMPERATURE.....48-50.  
MIN HUMIDITY........32-35%.  
WIND (20 FT)........WEST WINDS 5-10 MPH.  
CLEARING INDEX......1000+.  
HAINES INDEX........3 ..VERY LOW.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER). RAIN  
SHOWERS IN THE EVENING, THEN A CHANCE OF SNOW  
SHOWERS AFTER MIDNIGHT.  
CHANCE OF PCPN......80 PERCENT.  
CWR.................30 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....28-32.  
MAX HUMIDITY........94-98%.  
WIND (20 FT)........NORTHWEST WINDS 5-10 MPH.  
HAINES INDEX........3 ..VERY LOW.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT CLOUD COVER).  
CHANCE OF PCPN......10 PERCENT.  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....45-49.  
MIN HUMIDITY........30-34%.  
WIND (20 FT)........NORTHWEST WINDS 10-15 MPH.  
CLEARING INDEX......1000+.  
HAINES INDEX........3 ..VERY LOW.  
 

 
FORECASTER...TRAPHAGAN  
REQUESTED BY...DEREK BARTON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1706359.8/SLC  
 
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