953  
FXUS01 KWBC 151955  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
254 PM EST SAT DEC 15 2018  
 
VALID 00Z SUN DEC 16 2018 - 00Z TUE DEC 18 2018  
 
...HEAVY RAIN POSSIBLE FOR THE OLYMPIC PENINSULA AND CENTRAL  
CALIFORNIA...  
 
...SNOW FOR THE CASCADES, NORTHERN INTERMOUNTAIN REGION, AND  
SIERRAS...  
   
..SNOW FOR PARTS OF THE NORTHEAST AND RAIN/FREEZING RAIN
 
 
A STORM OVER THE TENNESSEE VALLEY WILL MOVE ROUGHLY NORTHEASTWARD  
TO OFF THE NEW ENGLAND COAST BY MONDAY. THE SYSTEM WILL PRODUCE  
RAIN FROM PARTS OF THE TENNESSEE VALLEY/OHIO VALLEY EASTWARD TO  
THE MID-ATLANTIC/SOUTHEAST THAT WILL MOVE OFF THE SOUTHEAST COAST  
OVERNIGHT SATURDAY. THE RAIN WILL LIFT INTO PARTS OF THE  
NORTHEAST WITH POCKETS OF RAIN/FREEZING RAIN STARTING OVERNIGHT  
SATURDAY, TOO, AND THE RAIN/FREEZING RAIN ENDING BY SUNDAY  
EVENING. SNOW WILL DEVELOP OVER PARTS OF THE NORTHERN  
APPALACHIANS ON SUNDAY AFTERNOON THAT WILL MOVE INTO PARTS OF  
NORTHERN NEW ENGLAND BY MONDAY MORNING. MOST OF THE RAIN WILL END  
OVERNIGHT SUNDAY OVER THE MID-ATLANTIC WHILE CONTINUING OVER PARTS  
OF SOUTHERN NEW ENGLAND INTO MONDAY.  
 
MEANWHILE, MOISTURE AHEAD OF THE NEXT PACIFIC FRONT WILL AID IN  
DEVELOPING RAIN OVER PARTS OF THE NORTHERN CALIFORNIA COAST AND  
THE PACIFIC NORTHWEST COAST THAT WILL SLOWLY MOVE INLAND OVERNIGHT  
SATURDAY WITH SNOW DEVELOPING OVER PARTS OF CASCADES BY SUNDAY  
MORNING. OVERNIGHT SUNDAY, SNOW WILL MOVE INTO PARTS OF THE  
NORTHERN INTERMOUNTAIN REGION. ALSO OVERNIGHT SUNDAY, RAIN WILL  
MOVE INTO CENTRAL CALIFORNIA WITH SNOW DEVELOPING OVER THE HIGHEST  
ELEVATIONS OF THE SIERRAS, CONTINUING INTO MONDAY. ADDITIONALLY,  
UPPER-LEVEL ENERGY OVER NORTHWESTERN MEXICO WILL MOVE  
NORTHEASTWARD INTO THE SOUTHERN ROCKIES BY MONDAY. THE ENERGY  
WILL AID IN DEVELOPING RAIN OVER PARTS OF WESTERN TEXAS LATE  
SUNDAY NIGHT INTO MONDAY.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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