839  
FXUS01 KWBC 252009  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
408 PM EDT WED OCT 25 2017  
 
VALID 00Z THU OCT 26 2017 - 00Z SAT OCT 28 2017  
   
..HEAVY RAIN POSSIBLE FOR NEW ENGLAND
 
 
   
..WET SNOW FOR THE UPPER MISSISSIPPI VALLEY/UPPER GREAT LAKES
 
 
A FRONT EXTENDING FROM THE NORTHERN PLAINS WESTWARD TO THE PACIFIC  
NORTHWEST WILL MOVE SOUTHEASTWARD TO THE UPPER GREAT LAKES/UPPER  
MISSISSIPPI VALLEY THEN ROUGHLY SOUTHWARD TO THE LOWER MISSISSIPPI  
VALLEY/SOUTHERN PLAINS BY FRIDAY. LIGHT RAIN WILL DEVELOP OVER  
PARTS OF THE PACIFIC NORTHWEST THAT WILL END OVERNIGHT WEDNESDAY.  
ALSO OVERNIGHT WEDNESDAY, RAIN AND HIGHER ELEVATION SNOW WILL  
DEVELOP OVER PARTS OF THE NORTHERN ROCKIES/NORTHERN HIGH PLAINS  
THAT WILL CHANGE OVER TO ALL SNOW BY THURSDAY MORNING. THE SNOW  
WILL MOVE INTO THE CENTRAL ROCKIES BY THURSDAY AFTERNOON THAT WILL  
END OVERNIGHT THURSDAY. IN ADDITION, RAIN AND WET SNOW DEVELOP  
OVER PARTS OF THE NORTHERN PLAINS/UPPER MISSISSIPPI VALLEY AND THE  
UPPER GREAT LAKES ON THURSDAY AFTERNOON THAT WILL END OVER THE  
NORTHERN PLAINS OVERNIGHT THURSDAY. RAIN WILL EXPAND MORE OVER  
THE GREAT LAKES WHILE AREAS OF WET SNOW AND RAIN WILL CONTINUE  
OVER PARTS OF THE UPPER GREAT LAKES/UPPER MISSISSIPPI VALLEY  
THROUGH FRIDAY.  
 
MEANWHILE, UPPER-LEVEL ENERGY OVER THE GREAT LAKES INTO THE  
SOUTHERN APPALACHIANS WILL MOVE NORTHEASTWARD INTO NORTHERN NEW  
ENGLAND BY FRIDAY. THE ENERGY WILL AID IN DEVELOPING RAIN OVER  
PARTS OF THE GREAT LAKES/OHIO VALLEY INTO THE CENTRAL APPALACHIANS  
THAT WILL END OVERNIGHT WEDNESDAY. ADDITIONALLY, RAIN WILL  
DEVELOP ALONG AND NEAR THE ASSOCIATED FRONT OVER NEW ENGLAND THAT  
WILL BEGIN TO WANE ON FRIDAY. RAIN ALONG THE BOUNDARY WILL BE  
HEAVY AT TIMES.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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