026  
FXUS01 KWBC 130759  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
258 AM EST WED FEB 13 2019  
 
VALID 12Z WED FEB 13 2019 - 12Z FRI FEB 15 2019  
 
...HEAVY PRECIPITATION EXPECTED FOR THE WESTERN U.S. AND IMPROVING  
CONDITIONS FOR THE EAST COAST...  
 
COASTAL AND LOWER ELEVATION RAIN, ALONG WITH HEAVY MOUNTAIN SNOW,  
IS FORECAST TO CONTINUE ACROSS MUCH OF THE WESTERN STATES AS  
MULTIPLE FRONTS MOVE ONSHORE THROUGH THE END OF THE WEEK.  
CONDITIONS WILL BE FAVORABLE FOR VERY HEAVY RAIN ALONG THE CENTRAL  
AND SOUTHERN CALIFORNIA COAST AND NEARBY MOUNTAINS, WHICH WILL  
MAINTAIN AN ELEVATED RISK FOR FLASH FLOODING, AND POSSIBLE DEBRIS  
FLOWS NEAR RECENT WILDFIRE BURN SCAR AREAS. A MODERATE TO HIGH  
RISK AREA OF EXCESSIVE RAINFALL EXISTS ACROSS MUCH OF SOUTHERN  
CALIFORNIA ON THURSDAY WITH A HIGHLY ANOMALOUS SURGE OF PACIFIC  
MOISTURE DIRECTED TOWARDS THIS AREA AS PART OF AN ATMOSPHERIC  
RIVER EVENT. WIDESPREAD HEAVY SNOWFALL IS EXPECTED FROM THE  
OREGON CASCADES TO THE SIERRA NEVADA, WHERE 1 TO 3 FEET OF SNOW IS  
LIKELY THROUGH THE END OF THE WEEK, AND ADDITIONAL HEAVY SNOW IS  
ANTICIPATED FOR THE NORTHERN ROCKIES AS THE MOISTURE PLUME MOVES  
INLAND.  
 
THE WINTER STORM THAT HAS CROSSED THE NORTHEASTERN U.S. ON TUESDAY  
IS BEGINNING TO EXIT THE EAST COAST, WITH LINGERING SNOW ACROSS  
MUCH OF NEW ENGLAND ON WEDNESDAY AND LAKE EFFECT SNOW DOWNWIND OF  
THE GREAT LAKES. A BAND OF RAIN WITH SOME EMBEDDED THUNDERSTORMS  
IS EXPECTED ACROSS THE COASTAL PORTION OF THE SOUTHEAST U.S. AND  
FLORIDA EARLY ON WEDNESDAY BEFORE A COLD FRONT ADVECTS COOLER AND  
DRIER CONDITIONS TO THE REGION.  
 
ANOTHER WINTER STORM SYSTEM IS FORECAST TO DEVELOP OVER THE UPPER  
MIDWEST, GREAT LAKES, AND NORTHEAST REGIONS BY THE END OF THE WORK  
WEEK AS A DEVELOPING SURFACE LOW TRACKS ACROSS THE REGION. THE  
CORRIDOR OF SNOW AND FREEZING RAIN WITH THIS EVENT WILL BE FARTHER  
TO THE NORTHWEST COMPARED TO THE MOST RECENT WINTER STORM OVER THE  
EASTERN U.S.  
 
HAMRICK/CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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