275  
FXUS01 KWBC 230758  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
258 AM EST FRI FEB 23 2018  
 
VALID 12Z FRI FEB 23 2018 - 12Z SUN FEB 25 2018  
 
...HEAVY RAIN POSSIBLE FROM PARTS OF THE SOUTHERN PLAINS  
NORTHEASTWARD TO THE EASTERN OHIO VALLEY...  
 
...HEAVY SNOW POSSIBLE OVER PARTS OF THE UPPER MISSISSIPPI  
VALLEY/UPPER GREAT LAKES...  
   
..HEAVY SNOW POSSIBLE OVER THE CASCADES AND NORTHERN ROCKIES
 
 
...RAIN/FREEZING RAIN POSSIBLE OVER PARTS OF INTERIOR NEW  
ENGLAND...  
 
A STORM OVER THE UPPER GREAT LAKES/UPPER MISSISSIPPI VALLEY WILL  
MOVE NORTHEASTWARD INTO SOUTHEASTERN CANADA OVERNIGHT FRIDAY. THE  
SYSTEM PULLS A FRONT EXTENDING ROUGHLY FROM THE WESTERN OHIO  
VALLEY TO THE WESTERN GULF COAST THAT WILL MOVE EASTWARD OFF THE  
NORTHEAST/NORTHERN MID-ATLANTIC COAST THEN WESTWARD TO A WAVE OF  
LOW PRESSURE OVER THE MIDDLE MISSISSIPPI VALLEY BY SATURDAY  
EVENING. SNOW WILL DEVELOP OVER PARTS OF THE NORTHERN PLAINS TO  
THE UPPER MISSISSIPPI VALLEY/UPPER GREAT LAKES THAT WILL LIFT  
NORTHEASTWARD INTO CANADA BY FRIDAY EVENING. SHOWERS AND  
THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF THE FRONT FROM THE  
WESTERN GULF COAST/SOUTHERN PLAINS TO THE OHIO VALLEY THAT WILL  
LIFT NORTHWARD INTO PARTS OF THE MIDDLE/LOWER MISSISSIPPI VALLEY  
BY FRIDAY EVENING. ADDITIONAL SHOWERS AND THUNDERSTORMS WILL ALSO  
DEVELOP OVER PARTS OF THE CENTRAL GULF COAST BY FRIDAY EVENING.  
IN ADDITION, RAIN WILL DEVELOP OVER PARTS OF THE CENTRAL  
APPALACHIANS INTO THE MID-ATLANTIC THAT WILL MOVE INTO PARTS OF  
THE NORTHEAST BY FRIDAY EVENING WITH SNOW DEVELOPING OVER PARTS OF  
NORTHERN MAINE. THE RAIN WILL MOVE OFF THE NORTHEAST  
COAST/NORTHERN MID-ATLANTIC COAST BY SATURDAY MORNING. A REGION  
OF RAIN/FREEZING RAIN WILL DEVELOP OVER PARTS OF INTERIOR NEW  
ENGLAND FRIDAY INTO FRIDAY EVENING.  
 
MEANWHILE, A DEVELOPING WAVE OF LOW PRESSURE OVER THE SOUTHERN  
HIGH PLAINS WILL MOVE NORTHEASTWARD TO THE MIDDLE MISSISSIPPI  
VALLEY BY SATURDAY EVENING. THE ASSOCIATED FRONT WILL MOVE FROM  
THE SOUTHERN ROCKIES/SOUTHWEST WILL ALSO MOVE NORTHEASTWARD TO THE  
MIDDLE MISSISSIPPI VALLEY SOUTHWESTWARD TO THE WESTERN GULF COAST  
BY SATURDAY EVENING. THE STORM WILL PRODUCE SNOW OVER PARTS OF  
THE GREAT BASIN/SOUTHWEST AND THE CENTRAL ROCKIES THAT WILL MOVE  
NORTHEASTWARD INTO PARTS OF THE CENTRAL PLAINS AND  
CENTRAL/SOUTHERN ROCKIES BY SATURDAY MORNING. THE SNOW WILL MOVE  
INTO PARTS OF THE NORTHERN PLAIN/UPPER MISSISSIPPI VALLEY BY  
SATURDAY EVENING. OVERNIGHT FRIDAY, SHOWERS AND THUNDERSTORMS  
WILL DEVELOP ALONG AND AHEAD OF THE ASSOCIATED BOUNDARY OVER THE  
SOUTHERN PLAINS INTO SATURDAY MORNING. THE SHOWERS AND  
THUNDERSTORMS WILL MOVE INTO THE MIDDLE/LOWER MISSISSIPPI VALLEY  
BY SATURDAY EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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