163  
FXUS01 KWBC 050830  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
329 AM EST TUE DEC 05 2017  
 
VALID 12Z TUE DEC 05 2017 - 12Z THU DEC 07 2017  
   
..HEAVY SNOW POSSIBLE OVER PARTS OF THE UPPER GREAT LAKES
 
 
...HEAVY LAKE EFFECT SNOW POSSIBLE OVER THE PARTS OF THE LOWER  
GREAT LAKES...  
   
..SNOW POSSIBLE OVER PARTS OF SOUTHWESTERN TEXAS
 
 
...HEAVY RAIN POSSIBLE OVER PARTS OF SOUTHERN PLAINS/LOWER  
MISSISSIPPI VALLEY...  
 
A STRONG FRONT EXTENDING FROM THE LOWER GREAT LAKES ROUGHLY  
SOUTHWESTWARD TO THE LOWER MISSISSIPPI VALLEY/WESTERN GULF COAST  
WILL MOVE EASTWARD OFF THE EAST COAST AND THE GULF COAST BY  
WEDNESDAY EVENING. RAIN WILL DEVELOP ALONG AND AHEAD OF THE  
BOUNDARY FROM THE LOWER GREAT LAKES TO PARTS OF THE LOWER  
MISSISSIPPI VALLEY/SOUTHERN PLAINS THAT WILL MOVE EASTWARD TO THE  
EASTERN SEABOARD BY WEDNESDAY MORNING. THE RAIN WILL MOVE OFF THE  
NORTHEAST/NORTHERN MID-ATLANTIC COAST BY WEDNESDAY EVENING.  
OVERNIGHT TUESDAY, SNOW WILL DEVELOP OVER PARTS OF THE  
NORTHERN/CENTRAL APPALACHIANS ENDING OVER THE CENTRAL APPALACHIANS  
BY WEDNESDAY MORNING. RAIN AND SNOW MOVE INTO PARTS OF NORTHERN  
NEW ENGLAND EARLY WEDNESDAY MORNING ENDING BY WEDNESDAY AFTERNOON.  
 
MEANWHILE, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF  
THE WESTERN GULF COAST ON TUESDAY THAT WILL MOVE INTO THE CENTRAL  
GULF COAST BY TUESDAY EVENING. OVERNIGHT TUESDAY, THE SHOWERS AND  
THUNDERSTORMS WILL MOVE INTO PARTS OF THE EASTERN GULF COAST AND  
INTO NORTHEASTERN FLORIDA BY WEDNESDAY EVENING.  
 
ADDITIONALLY, UPPER-LEVEL ENERGY OVER SOUTHERN CALIFORNIA WILL  
MOVE INTO NORTHERN MEXICO AND SOUTHWESTERN TEXAS ON WEDNESDAY INTO  
WEDNESDAY EVENING. THE ENERGY WILL DEVELOP RAIN AND SNOW OVER  
PARTS OF THE SOUTHERN ROCKIES/SOUTHERN PLAINS THAT WILL EXPAND  
INTO PARTS OF THE SOUTHERN PLAIN OVERNIGHT TUESDAY. IN ADDITION,  
RAIN WILL DEVELOP OVER PARTS OF THE WESTERN GULF COAST AND EXPAND  
NORTHWARD INTO THE SOUTHERN PLAINS MERGING WITH THE ARE OF RAIN  
AND SNOW EXPANDING EASTWARD OUT OF THE SOUTHERN ROCKIES BY  
WEDNESDAY MORNING. THE RAIN AND SNOW WILL BE CONFINED TO  
SOUTHWEST TEXAS BY WEDNESDAY EVENING AS RAIN EXPANDS EASTWARD  
ACROSS THE SOUTHERN PLAINS INTO PARTS OF THE CENTRAL/EASTERN GULF  
COAST.  
 
MORE TO FOLLOW  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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