789  
FXUS01 KWBC 090728  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
328 AM EDT TUE APR 09 2019  
 
VALID 12Z TUE APR 09 2019 - 12Z THU APR 11 2019  
 
...MAJOR WINTER STORM WILL PRODUCE HEAVY SNOW AND NEAR BLIZZARD  
CONDITIONS TO PORTIONS OF THE NORTHERN ROCKIES, NORTHERN/CENTRAL  
PLAINS INTO THE UPPER MISSISSIPPI VALLEY...  
 
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF  
THE SOUTHEAST...  
 
...HEAVY RAIN POSSIBLE OVER PARTS OF THE MIDDLE MISSISSIPPI  
VALLEY...  
   
..HEAVY SNOW LIKELY FOR NORTHERN NEW ENGLAND
 
 
LOW PRESSURE OVER THE CENTRAL/EASTERN GULF COAST WILL MOVE  
EASTWARD OFF THE SOUTHEAST COAST BY TUESDAY EVENING. THE SYSTEM  
WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER THE SOUTHEAST,  
LIKEWISE, MOVING OFF THE SOUTHEAST COAST OVERNIGHT TUESDAY. A  
COMPLICATED AREA OF LOW PRESSURE OVER THE LOWER GREAT LAKES WILL  
MOVE OFF THE NORTHEAST COAST OVERNIGHT TUESDAY. THE STORM WILL  
PRODUCE SNOW OVER NORTHERN NEW ENGLAND THROUGH WEDNESDAY EVENING.  
IN ADDITION, RAIN WITH EMBEDDED THUNDERSTORMS WILL DEVELOP OVER  
PARTS OF THE NORTHEAST/NORTHERN MID-ATLANTIC THAT WILL MOVE OFF  
THE NORTHEAST/NORTHERN MID-ATLANTIC COAST BY LATE TUESDAY EVENING.  
 
MEANWHILE, A MAJOR LATE-SEASON WINTER STORM WILL DEVELOP OVER  
PARTS OF THE NORTHERN ROCKIES AND MOVE EASTWARD TO THE CENTRAL  
PLAINS/MIDDLE MISSISSIPPI VALLEY BY THURSDAY. THE STORM WILL  
PRODUCE SNOW OVER THE CASCADES WITH LOWER ELEVATION RAIN FROM THE  
PACIFIC NORTHWEST COAST INLAND TO PARTS OF THE NORTHERN ROCKIES ON  
TUESDAY. BY TUESDAY EVENING, SNOW WILL SPREAD INTO PARTS OF THE  
GREAT BASIN INTO THE NORTHERN ROCKIES. OVERNIGHT TUESDAY, SNOW  
WILL SPREAD INTO THE CENTRAL ROCKIES AND THE NORTHERN HIGH PLAINS.  
ON WEDNESDAY, SNOW WILL DEVELOP OVER PARTS OF THE  
NORTHERN/CENTRAL PLAINS WITH RAIN STRETCHING FROM PARTS OF THE  
CENTRAL PLAINS EASTWARD INTO THE MIDDLE MISSISSIPPI VALLEY AND  
WESTERN OHIO VALLEY. THE SNOW WILL ALSO EXPAND OVER THE UPPER  
MISSISSIPPI VALLEY INTO PARTS OF THE UPPER GREAT LAKES OVERNIGHT  
WEDNESDAY INTO THURSDAY. THE SNOW WILL ALSO CONTINUE OVER THE  
NORTHERN/CENTRAL ROCKIES THROUGH THURSDAY.  
 
THIS STORM IS EXPECTED TO INTENSIFY RAPIDLY LATE TUESDAY INTO  
WEDNESDAY.  
THIS WILL PRODUCE INCREASING WIND ACROSS A LARGE REGIONS FROM THE  
SOUTHWEST, GREAT BASIN AND ACROSS MUCH OF THE MIDDLE SECTION OF  
THE NATION FROM THE SOUTHERN PLAINS TO THE NORTHERN PLAINS. THE  
POTENTIALLY HIGH WIND WILL PRODUCE LIFE-THREATENING TRAVEL  
CONDITIONS WITH BLIZZARD  
CONDITIONS POSSIBLE OVER PORTIONS OF THE CENTRAL/NORTHERN PLAINS  
INTO THE  
UPPER MISSISSIPPI VALLEY LATE TUESDAY INTO THURSDAY. TO THE SOUTH  
OF THE  
REGION OF HEAVY SNOWS, DAMAGING WIND IS LIKELY FROM THE SOUTHWEST,  
ACROSS  
PORTIONS OF THE GREAT BASIN ON TUESDAY AND INTO THE SOUTHERN AND  
CENTRAL  
PLAINS DURING WEDNESDAY.  
 
ADDITIONAL UPPER-LEVEL ENERGY WILL MOVE INTO THE NORTHWEST  
WEDNESDAY NIGHT INTO THURSDAY THAT WILL PRODUCE ADDITIONAL SNOW  
OVER PARTS OF THE NORTHERN ROCKIES AND PARTS OF THE GREAT BASIN  
WITH RAIN ALONG THE PACIFIC NORTHWEST.  
 
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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