522  
FXUS01 KWBC 010800  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 AM EST THU MAR 01 2018  
 
VALID 12Z THU MAR 01 2018 - 12Z SAT MAR 03 2018  
   
..VERY HEAVY SNOW OVER THE SIERRAS
 
 
...HEAVY SNOW OVER PARTS OF THE NORTHERN ROCKIES, GREAT BASIN, AND  
THE SHASTA/TRINITY MOUNTAINS...  
   
..HEAVY SNOW OVER PARTS OF THE GREAT LAKES INTO THE NORTHEAST
 
 
A COMPLICATED STORM OVER THE OHIO VALLEY WILL MOVE EASTWARD OFF  
THE NORTHEAST COAST BY FRIDAY MORNING AND DEEPEN RAPIDLY BY FRIDAY  
EVENING. THE SYSTEM WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER  
THE GULF COAST THAT WILL MOVE OFF THE SOUTHEAST AND GULF COAST  
COAST BY LATE THURSDAY NIGHT. SHOWERS AND THUNDERSTORMS WILL  
LINGER OVER SOUTHERN FLORIDA ON FRIDAY INTO FRIDAY EVENING. RAIN  
WILL ALSO DEVELOP OVER MIDDLE MISSISSIPPI VALLEY/OHIO VALLEY INTO  
THE MID-ATLANTIC AND PARTS OF THE SOUTHEAST ON THURSDAY. THE RAIN  
WILL MOVE EASTWARD OFF THE SOUTHERN MID-ATLANTIC/SOUTHEAST BY  
FRIDAY MORNING. IN ADDITION, RAIN WILL MOVE INTO SOUTHERN NEW  
ENGLAND OVERNIGHT THURSDAY EXPANDING INTO THE COASTAL REGIONS OF  
MAINE BY FRIDAY MORNING. THE RAIN ENDS OVER THE MAINE COAST WHILE  
LINGERING OVER SOUTHERN NEW ENGLAND INTO THE NORTHERN MID-ATLANTIC  
COAST BY FRIDAY EVENING. SNOW WILL DEVELOP OVER NORTHERN MAINE ON  
THURSDAY BEGINNING TO WANE BY FRIDAY EVENING. ADDITIONALLY, SNOW  
WILL DEVELOP OVER PARTS OF UPPER MISSISSIPPI VALLEY ON THURSDAY  
MORNING THAT WILL MOVE INTO PARTS OF THE GREAT LAKES/OHIO VALLEY  
BY THURSDAY EVENING. OVERNIGHT THURSDAY, THE SNOW EXPANDS INTO  
CENTRAL APPALACHIANS AND PARTS OF THE NORTHEAST BY FRIDAY MORNING.  
THE SNOW WINDS DOWN OVER MOST OF THE GREAT LAKES/OHIO VALLEY BY  
FRIDAY EVENING WHILE LINGERING OVER THE NORTHERN APPALACHIANS INTO  
PARTS OF THE NORTHERN MID-ATLANTIC. THE SNOW WILL BE HEAVY AT  
TIMES OVER THE OHIO VALLEY/LOWER GREAT LAKES INTO PARTS OF THE  
NORTHEAST THURSDAY AFTERNOON INTO FRIDAY MORNING.  
 
MEANWHILE, A DEEP UPPER-LEVEL LOW JUST OFF THE PACIFIC NORTHWEST  
COAST WILL EXPAND INLAND OVER THE NORTHERN ROCKIES/NORTHERN HIGH  
PLAINS INTO THE GREAT BASIN/CENTRAL CALIFORNIA BY FRIDAY EVENING.  
THE STORM WILL PRODUCE RAIN AND HIGHER ELEVATION SNOW OVER THE  
PACIFIC NORTHWEST INTO NORTHERN/CENTRAL CALIFORNIA ON THURSDAY  
MORNING WITH SNOW AND LOWER ELEVATIONS RAIN EXPANDING INTO THE  
NORTHERN ROCKIES/GREAT BASIN BY THURSDAY EVENING. THE RAIN ALSO  
WILL EXPAND INTO SOUTHERN CALIFORNIA COAST ON FRIDAY INTO FRIDAY  
EVENING. THE SNOW AND COASTAL RAIN WILL CONTINUE OVER PARTS OF  
THE PACIFIC NORTHWEST INTO NORTHERN/CENTRAL CALIFORNIA INTO THE  
NORTHERN ROCKIES/NORTHERN HIGH PLAINS AND THE GREAT BASIN  
OVERNIGHT THURSDAY INTO FRIDAY EVENING. THE SNOW WILL BE VERY  
HEAVY AT TIMES OVER THE SIERRAS THROUGH FRIDAY.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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