252  
FXUS01 KWBC 280743  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
243 AM EST SUN JAN 28 2018  
 
VALID 12Z SUN JAN 28 2018 - 12Z TUE JAN 30 2018  
   
..HEAVY RAIN POSSIBLE OVER PARTS OF THE PACIFIC NORTHWEST
 
 
   
..HEAVY SNOW OVER THE NORTHERN CASCADES
 
 
   
..HEAVY RAIN OVER PARTS OF THE SOUTHERN MID-ATLANTIC COAST
 
 
A FRONT ALONG THE EASTERN SEABOARD WILL SLOWLY MOVE EASTWARD OUT  
OVER THE WESTERN ATLANTIC BY MONDAY EVENING. MOISTURE WILL POOL  
ALONG THE BOUNDARY AIDING IN THE DEVELOPMENT OF RAIN FROM SOUTHERN  
NEW ENGLAND SOUTHWARD TO THE SOUTHEAST AND THE CENTRAL GULF COAST  
AND AS FAR WESTWARD AS CENTRAL APPALACHIANS/EASTERN OHIO VALLEY  
AND THE TENNESSEE VALLEY THAT WILL SLOWLY MOVE OFF THE NORTHEAST  
COAST BY SUNDAY EVENING. BY MONDAY EVENING THE RAIN WILL BE  
CONFINED TO PARTS OF THE NORTHERN MID-ATLANTIC COAST AND  
SOUTHEASTERN FLORIDA.  
 
IN ADDITION, UPPER-LEVEL ENERGY OVER THE NORTHERN HIGH PLAINS WILL  
MOVE SOUTHEASTWARD TO THE OHIO VALLEY BY MONDAY EVENING. THE  
ENERGY WILL PRODUCE SNOW OVER PARTS OF THE NORTHERN  
ROCKIES/NORTHERN HIGH PLAINS THAT WILL SLOWLY DISSIPATE ON SUNDAY  
EVENING. OVERNIGHT SUNDAY, THE ENERGY WILL PRODUCE SNOW AND RAIN  
OVER PARTS OF THE MIDDLE MISSISSIPPI VALLEY/WESTERN OHIO VALLEY  
THAT WILL MOVE EASTWARD TO THE LOWER GREAT LAKES/EASTERN OHIO  
VALLEY AS LIGHT SNOW AND SOME LIGHT RAIN BY MONDAY EVENING.  
 
MEANWHILE, A PLUME OF MOISTURE WILL STREAM INTO THE PACIFIC  
NORTHWEST ON SUNDAY THAT WILL SLOWLY BEGIN TO WANE BY MONDAY  
EVENING. THE MOISTURE WILL AID IN PRODUCING RAIN AND HIGHER  
ELEVATION SNOW OVER THE PACIFIC NORTHWEST THAT WILL BECOME  
CONFINED TO THE OLYMPIC PENINSULA AND PARTS OF THE NORTHERN  
INTERMOUNTAIN REGION BY SUNDAY EVENING. RAIN WILL MOVE SOUTHWARD  
INTO THE NORTHWEST OREGON COAST BY MONDAY EVENING. ON MONDAY INTO  
MONDAY EVENING THE RAIN WILL BE HEAVY AT TIMES. OVERNIGHT SUNDAY  
INTO MONDAY EVENING, THE SNOW LEVELS WILL SLOWLY START TO LOWER AS  
UPPER-LEVEL TROUGHING MOVES INTO THE NORTHWEST.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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