066  
FXUS01 KWBC 022000  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
259 PM EST WED JAN 02 2019  
 
VALID 00Z THU JAN 03 2019 - 00Z SAT JAN 05 2019  
 
...HEAVY SNOW FOR THE NORTHERN CASCADES AND PARTS OF THE NORTHERN  
ROCKIES...  
 
...SNOW AND RAIN/FREEZING RAIN POSSIBLE FOR PARTS OF THE SOUTHERN  
PLAINS...  
 
HEAVY RAIN FOR PARTS OF THE PACIFIC NORTHWEST COAST AND FROM PARTS  
OF THE WESTERN GULF COAST/LOWER MISSISSIPPI VALLEY INTO THE  
SOUTHEAST..  
 
AN UPPER-LEVEL LOW OVER THE SOUTHERN ROCKIES WILL MOVE EASTWARD TO  
THE LOWER MISSISSIPPI VALLEY/TENNESSEE VALLEY BY FRIDAY. THE  
CIRCULATION AROUND THE UPPER-LEVEL LOW WILL DRAW MOISTURE  
NORTHWARD OFF THE WESTERN GULF OF MEXICO INTO THE SOUTHERN PLAINS  
THEN FROM THE LOWER MISSISSIPPI VALLEY EASTWARD INTO THE SOUTHEAST  
OVERNIGHT THURSDAY INTO FRIDAY. SHOWERS AND THUNDERSTORMS WILL  
DEVELOP ALONG THE WESTERN GULF COAST THAT WILL SLOWLY EXPAND  
EASTWARD INTO PARTS OF THE SOUTHEAST BY FRIDAY. RAIN, HEAVY AT  
TIMES, WILL DEVELOP OVER THE SOUTHERN PLAINS INTO THE LOWER  
MISSISSIPPI VALLEY WITH RAIN EXTENDING INTO PARTS OF THE  
MID-ATLANTIC/CENTRAL APPALACHIANS AND THE SOUTHEAST. THE HEAVY  
RAIN WILL EXPAND INTO PARTS OF THE SOUTHERN APPALACHIANS OVERNIGHT  
WEDNESDAY THEN WANING BY THURSDAY EVENING. THE HEAVY RAIN WILL  
CONTINUE OVER PARTS OF THE LOWER MISSISSIPPI VALLEY THAT WILL MOVE  
INTO PARTS OF THE SOUTHEAST BY FRIDAY. AN AREA OF SNOW WITH  
POCKETS OF RAIN/FREEZING RAIN WILL DEVELOP OVER PARTS OF THE  
SOUTHERN PLAINS OVERNIGHT WEDNESDAY INTO THURSDAY EVENING. WPC  
HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAIN OVER THE PARTS OF THE  
WESTERN GULF COAST INTO PARTS OF THE LOWER MISSISSIPPI  
VALLEY/EASTERN GULF COAST THROUGH FRIDAY.  
 
MEANWHILE, AN AREA OF UPPER-LEVEL ENERGY OVER THE UPPER GREAT  
LAKES INTO THE MIDDLE MISSISSIPPI VALLEY WILL MOVE EASTWARD OFF  
THE NORTHEAST COAST BY THURSDAY AFTERNOON. THE SYSTEM WILL  
PRODUCE LIGHT SNOW OVER PARTS OF THE GREAT LAKES THAT WILL MOVE  
INTO NORTHERN NEW ENGLAND BY THURSDAY MORNING. THE SNOW WILL END  
OVER THE GREAT LAKES BY THURSDAY AFTERNOON AND OVERNIGHT THURSDAY  
FOR NORTHERN NEW ENGLAND.  
 
IN ADDITION, ONSHORE FLOW OVER THE PACIFIC NORTHWEST WILL AID IN  
PRODUCING RAIN AND HIGHER ELEVATION SNOW OVER THE REGION THURSDAY  
MORNING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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