769  
FXUS01 KWBC 070803  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
303 AM EST THU DEC 07 2017  
 
VALID 12Z THU DEC 07 2017 - 12Z SAT DEC 09 2017  
 
...HEAVY LAKE EFFECT/LAKE ENHANCED SNOW POSSIBLE DOWNWIND FROM THE  
GREAT LAKES...  
   
..SNOW POSSIBLE OVER SOUTHWESTERN TEXAS
 
 
   
..HEAVY RAIN POSSIBLE FOR PARTS OF THE SOUTHEAST
 
 
UPPER-LEVEL ENERGY OVER NEW MEXICO WILL MOVE SOUTHWARD INTO  
NORTHERN MEXICO THEN OVERNIGHT THURSDAY MOVE EASTWARD TO THE  
SOUTHERN TIP OF TEXAS BY FRIDAY EVENING. IMPULSES OF ENERGY WILL  
RACE EASTWARD OVER THE GULF COAST STATES ON THURSDAY INTO FRIDAY  
AFTERNOON. THE ENERGY WILL AID IN PRODUCING SNOW OVER  
SOUTHWESTERN TEXAS THAT WILL SLOWLY COME TO AN END BY FRIDAY  
MORNING. RAIN WILL DEVELOP ACROSS THE WESTERN GULF COAST TO THE  
EASTERN GULF COAST AND INTO THE SOUTHEAST THAT WILL END OVER THE  
WESTERN GULF COAST BY FRIDAY AFTERNOON. OVERNIGHT THURSDAY, AREAS  
OF SNOW WILL DEVELOP ON THE BACK END OF THE PRECIPITATION SHIELD  
OVER PARTS OF THE WESTERN GULF COAST. LIKEWISE, SOME REGIONS OF  
SNOW WILL DEVELOP OVER PARTS OF THE CENTRAL GULF COAST ON THE BACK  
EDGE OF THE PRECIPITATION SHIELD ON FRIDAY INTO FRIDAY EVENING.  
THE RAIN WILL CONTINUE OVER THE EASTERN GULF COAST/SOUTHEAST  
THROUGH FRIDAY EVENING WITH AREAS OF SNOW DEVELOPING OVER PARTS OF  
THE SOUTHERN APPALACHIANS ON FRIDAY AFTERNOON.  
 
LAKE EFFECT AND LAKE ENHANCED SNOW WILL DEVELOP OVER THE GREAT  
LAKES INTO PARTS OF THE CENTRAL/NORTHERN APPALACHIANS THROUGH  
FRIDAY EVENING. A REINFORCING FRONT WILL MOVE OVER THE UPPER  
GREAT LAKES ON FRIDAY. WITH THE REINFORCING FRONT, LIGHT SNOW  
WILL DEVELOP OVER PARTS OF THE UPPER MISSISSIPPI VALLEY FRIDAY  
INTO FRIDAY EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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