723  
FXUS01 KWBC 182001  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 PM EST SAT NOV 18 2017  
 
VALID 00Z SUN NOV 19 2017 - 00Z TUE NOV 21 2017  
 
...HEAVY PRECIPITATION POSSIBLE OVER PARTS OF THE NORTHWEST, OHIO  
VALLEY, LOWER GREAT LAKES, AND NORTHEAST...  
 
A COMPLEX LOW PRESSURE SYSTEM MOVING THROUGH THE OHIO VALLEY TODAY  
WILL CONTINUE TO LIFT THROUGH THE NORTHEAST THIS EVENING AND ON  
SUNDAY. IT WILL SPREAD HEAVY PRECIPITATION TO PORTIONS OF THE  
NORTHEAST. IN ITS WAKE, LAKE EFFECT SNOWS ARE EXPECTED DOWNWIND  
OF THE GREAT LAKES WITHIN THE MAIN ZONE OF ITS ASSOCIATED COLD  
ADVECTION.  
 
STRONG SURFACE HIGH PRESSURE WILL EXPAND FROM THE GREAT BASIN INTO  
PORTIONS OF THE SOUTHWEST/SOUTHERN PLAINS. WARM AND DRY CONDITIONS  
ARE EXPECTED ACROSS MOST OF THE SOUTHWEST AND SOUTHERN/CENTRAL  
PLAINS. ELEVATED FIRE WEATHER RISK WILL CONTINUE PER THE STORM  
PREDICTION CENTER.  
 
ACROSS THE PACIFIC NORTHWEST, ONSHORE FLOW RAMPS UP AS A COLD  
FRONT APPROACHES THE REGION WHICH SHOULD LEAD TO HEAVY RAINS AND  
HIGHER ELEVATION SNOWS AS THE FRONT MOVES INTO THE AREA.  
 
CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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