461  
FXUS01 KWBC 162004  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
304 PM EST FRI FEB 16 2018  
 
VALID 00Z SAT FEB 17 2018 - 00Z MON FEB 19 2018  
 
...SNOW POSSIBLE FOR PARTS OF THE CENTRAL APPALACHIANS/NORTHERN  
MID-ATLANTIC...  
   
..HEAVY SNOW POSSIBLE FOR THE CASCADES AND THE NORTHERN ROCKIES
 
 
   
..HEAVY RAIN POSSIBLE OVER PARTS OF THE PACIFIC NORTHWEST
 
 
A FRONT EXTENDING FROM THE SOUTHERN MID-ATLANTIC TO THE WESTERN  
GULF COAST WILL HAVE A WAVE OF LOW PRESSURE DEVELOP OVER THE  
CENTRAL GULF COAST ON FRIDAY EVENING. THE LOW WILL MOVE  
NORTHEASTWARD TO THE SOUTHERN MID-ATLANTIC COAST BY SATURDAY  
EVENING THEN MOVE OUT OVER THE WESTERN ATLANTIC BY SUNDAY MORNING.  
THE BOUNDARY WILL SETTLE SOUTHWARD OVER THE SOUTHEAST BY SUNDAY  
MORNING AS WELL. THE SYSTEM WILL PRODUCE RAIN OVER PARTS OF  
SOUTHERN NEW ENGLAND/MID-ATLANTIC SOUTHWESTWARD INTO THE TENNESSEE  
VALLEY AND MOVE OFF MOST OF THE NORTHEAST/NORTHERN MID-ATLANTIC BY  
LATE FRIDAY NIGHT AND OFF THE SOUTHERN MID-ATLANTIC COAST BY  
SATURDAY MORNING. THE RAIN MAY CHANGE OVER TO SNOW BRIEFLY BEFORE  
ENDING FROM SOUTHERN NEW ENGLAND TO THE CENTRAL APPALACHIANS  
DURING THE EVENING HOURS ON FRIDAY.  
 
MEANWHILE, MOISTURE MOVING NORTHWESTWARD OVER THE SOUTHERN PLAINS  
FROM THE WESTERN GULF OF MEXICO WILL OVERRUN THE BOUNDARY OVER THE  
WESTERN GULF COAST PRODUCING RAIN OVER PARTS OF THE SOUTHERN  
ROCKIES INTO THE SOUTHERN PLAINS/CENTRAL GULF COAST ON FRIDAY  
EVENING. AS THE SURFACE WAVE OF LOW PRESSURE BEGINS TO MOVE  
NORTHEASTWARD INTO THE SOUTHERN PLAINS AND PARTS OF THE  
LOWER/MIDDLE MISSISSIPPI VALLEY BY SATURDAY MORNING AND ENDING  
OVER THE SOUTHERN ROCKIES/SOUTHERN HIGH PLAINS OVERNIGHT FRIDAY.  
THE RAIN WILL MOVE INTO THE SOUTHERN OHIO/TENNESSEE VALLEYS ON  
SATURDAY MOVING INTO THE MID-ATLANTIC BY SATURDAY EVENING. IN  
ADDITION BY SATURDAY EVENING, SNOW WILL DEVELOP OVER PARTS OF THE  
NORTHERN MID-ATLANTIC MOVING INTO PARTS OF NEW ENGLAND OVERNIGHT  
SATURDAY INTO SUNDAY MORNING. THE RAIN WILL MOVE OFF THE  
MID-ATLANTIC COAST BY SUNDAY MORNING WHILE ENDING OVER THE  
SOUTHERN MID-ATLANTIC INTO THE CENTRAL GULF COAST OVERNIGHT  
SATURDAY.  
 
MORE TO FOLLOW  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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