631  
FXUS01 KWBC 101956  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
255 PM EST SUN DEC 10 2017  
 
VALID 00Z MON DEC 11 2017 - 00Z WED DEC 13 2017  
 
...CRITICAL FIRE WEATHER CONDITIONS PERSISTING ACROSS SOUTHERN  
CALIFORNIA...  
 
...LOCALLY HEAVY LAKE EFFECT SNOWFALL TO CONTINUE DOWNWIND OF THE  
GREAT LAKES THROUGH SUNDAY NIGHT...  
 
...SNOWY CONDITIONS TO RETURN TO PORTIONS OF THE NORTHEAST ON  
TUESDAY...  
 
...SUBFREEZING TEMPERATURES REACHING IN CENTRAL FLORIDA MONDAY  
MORNING...  
 
HIGH PRESSURE WITH DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES  
WILL CONTINUE ACROSS MUCH OF THE WESTERN AND CENTRAL U.S. THROUGH  
THE EARLY PART OF THE WEEK. STRONG, GUSTY SANTA ANA WINDS ALONG  
WITH LOW RELATIVE HUMIDITIES WILL CONTRIBUTE TO DANGEROUS FIRE  
CONDITIONS ACROSS PORTIONS OF SOUTHERN CALIFORNIA THROUGH MONDAY.  
 
LAKE EFFECT SNOW WARNINGS REMAIN IN EFFECT IN THE LEES OF LAKES  
ERIE AND ONTARIO, WHERE STRONG, COLD WESTERLY WINDS ARE EXPECTED  
TO SUPPORT NARROW BANDS OF HEAVY LAKE EFFECT SNOWS THROUGH THE  
OVERNIGHT HOURS INTO EARLY MONDAY.  
 
A CLIPPER SYSTEM IS EXPECTED TO DELIVER MORE WIDESPREAD, BUT  
GENERALLY LIGHT SNOWS TO PORTIONS OF THE UPPER MIDWEST AND WESTERN  
GREAT LAKES AS IT DROPS OF OUT CENTRAL CANADA SUNDAY NIGHT.  
 
SNOWY CONDITIONS ARE EXPECTED TO RETURN TO PORTIONS OF THE  
NORTHEAST ON TUESDAY AS AN AREA OF LOW PRESSURE QUICKLY  
INTENSIFIES NEAR THE NORTHERN NEW ENGLAND COAST ON TUESDAY, WITH  
LOCALLY HEAVY ACCUMULATIONS POSSIBLE FOR PARTS OF NORTHERN NEW  
YORK AND INTERIOR NORTHERN NEW ENGLAND.  
 
MEANWHILE, COLD HIGH PRESSURE WILL SUPPORT BELOW NORMAL  
TEMPERATURES ACROSS THE SOUTHEAST INTO MONDAY, WITH LOWS EXPECTED  
TO DROP BELOW FREEZING AS FAR SOUTH AS THE NORTHERN TAMPA BAY AREA  
MONDAY MORNING.  
 
PEREIRA  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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