776  
FOUS11 KWBC 172017  
QPFHSD  
 
PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
316 PM EST SAT NOV 17 2018  
 
VALID 00Z SUN NOV 18 2018 - 00Z WED NOV 21 2018  
 
 
DAYS 1-3...  
   
..GREAT LAKES AND NORTHEAST
 
 
THE PERIOD LOOKS TO BE QUIET WITH RESPECT TO HEAVY SNOWFALL  
(AMOUNTS GREATER THAN 4-INCHES) AND SIGNIFICANT ICING (0.25-INCH  
OR MORE) -- WITH THE 24-HOUR PROBABILITIES OF EXCEEDANCE REMAINING  
BELOW 10 PERCENT FOR MUCH OF THE CONUS THROUGH 00 UTC WEDNESDAY.  
THERE ARE SOME SPOTTY AREAS WHERE PROBABILITIES DO INCREASE TO 10  
PERCENT OR MORE (SLIGHT RISK) FOR 4-INCHES IN THE LEE OF LAKE  
SUPERIOR, WHERE SOME LIGHT SYNOPTIC SNOWS, FOLLOWED BY LAKE  
EFFECT SNOW SHOWERS ARE EXPECTED TO DEVELOP IN ASSOCIATION WITH  
THE PASSAGE OF A SHORTWAVE TROUGH MOVING ACROSS THE REGION ON  
MONDAY. AS THE SYSTEM MOVES FURTHER EAST, BACKING FLOW AHEAD OF  
THE SYSTEM WILL SUPPORT INCREASING MOISTURE ADVECTION AND THE  
POTENTIAL FOR LIGHT PRECIPITATION ACROSS THE NORTHEAST, WITH SNOWS  
ACROSS THE MOUNTAINS OF NORTHERN NEW ENGLAND POSSIBLY TOTALING  
4-INCHES OR MORE.  
 
THE PROBABILITY OF SIGNIFICANT (0.25-INCH OR MORE) IS LESS THAN 10  
PERCENT.  
 
PEREIRA  
 

 
 
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