198  
FXUS01 KWBC 290757  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
356 AM EDT SUN OCT 29 2017  
 
VALID 12Z SUN OCT 29 2017 - 12Z TUE OCT 31 2017  
 
...TROPICAL STORM PHILIPPE WILL BECOME ABSORBED INTO FRONTAL ZONE  
ALONG THE EAST COAST BY MONDAY MORNING...  
 
...SEVERE THUNDERSTORMS AND HEAVY RAIN POSSIBLE OVER THE  
NORTHEAST/NORTHERN MID-ATLANTIC...  
 
...LIGHT TO MODERATE SNOW POSSIBLE OVER PARTS OF THE UPPER GREAT  
LAKES, CENTRAL APPALACHIANS, AND PARTS OF THE NORTHERN/CENTRAL  
ROCKIES...  
 
HEAVY THUNDERSHOWERS ARE FORECAST FOR MUCH OF THE MID-ATLANTIC AND  
NORTHEAST TODAY AS A COLD FROM TRACKS THROUGH THE EASTERN STATES  
AND WARM, MOIST AIR ADVECTS ONSHORE FROM THE ATLANTIC OCEAN.  
PORTIONS OF THE MID-ATLANTIC HAVE A MARGINAL RISK FOR SEVERE  
THUNDERSTORMS TO DEVELOP THIS AFTERNOON AND EVENING. LOW PRESSURE  
ALONG THE BOUNDARY OVER THE SOUTHERN APPALACHIANS WILL RAPIDLY  
DEEPEN WHILE MOVING NORTHWARD TO THE NORTHERN APPALACHIANS BY  
MONDAY MORNING. RAIN, HEAVY AT TIMES, WILL DEVELOP ALONG THE FRONT  
FROM THE CENTRAL APPALACHIANS TO THE LOWER GREAT LAKES/NORTHERN  
APPALACHIANS AND WILL SPREAD TO THE NORTHEAST/NORTHERN  
MID-ATLANTIC BY THIS AFTERNOON.  
 
MEANWHILE, TROPICAL STORM PHILIPPE IS EXPECTED TO BECOME ABSORBED  
AS TRIPLE POINT LOW OVER SOUTHEASTERN CANADA. SEE THE LATEST  
ADVISORY FROM THE NATIONAL HURRICANE CENTER FOR THE MOST UP TO  
DATE INFORMATION ON STORM TRACK AND INTENSITY. RAIN, HEAVY AT  
TIMES, WILL DEVELOP OVER PARTS OF NORTHERN NEW ENGLAND ON MONDAY.  
ADDITIONALLY, LIGHT SNOW WILL DEVELOP OVER PARTS OF THE HIGHER  
ELEVATIONS OF THE CENTRAL APPALACHIANS OVERNIGHT SUNDAY ENDING ON  
MONDAY MORNING.  
 
ANOTHER SURGE OF COLD AIR WILL MOVE THROUGH THE CENTRAL U.S. AS A  
LOW PRESSURE SYSTEM MOVES SOUTHEASTWARD TO THE UPPER GREAT  
LAKES/WESTERN OHIO VALLEY SOUTHWESTWARD INTO THE SOUTHERN HIGH  
PLAINS BY MONDAY. RAIN WILL DEVELOP FROM THE NORTHERN HIGH PLAINS  
TO UPPER/MIDDLE MISSISSIPPI VALLEY TONIGHT; AND INTO PARTS OF THE  
UPPER GREAT LAKES BY MONDAY. LIGHT TO MODERATE SNOW WILL DEVELOP  
OVER PARTS OF THE NORTHERN/CENTRAL ROCKIES THROUGH THE OVERNIGHT  
HOURS- SOME LOCALIZED AREAS MAY HAVE ACCUMULATIONS OF 4 TO 8  
INCHES. LIGHT SNOW WILL ALSO BE POSSIBLE FOR PORTIONS OF THE UPPER  
MISSISSIPPI VALLEY/UPPER GREAT LAKES TONIGHT THROUGH MONDAY.  
 
CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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