684  
FXUS01 KWBC 101926  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
325 PM EDT SUN MAR 10 2019  
 
VALID 00Z MON MAR 11 2019 - 00Z WED MAR 13 2019  
 
...LINGERING SNOWFALL ACROSS NEW ENGLAND AND THE GREAT LAKES WITH  
RAIN FARTHER SOUTH ACROSS THE GULF COAST TO SOUTHERN PLAINS...  
 
...ANOTHER ROUND OF SEVERE WEATHER AND HEAVY RAINFALL MOVES INTO  
THE SOUTHERN PLAINS ON TUESDAY...  
 
...HEAVY SNOW POSSIBLE FOR THE CASCADES AND SAN JUAN MOUNTAINS OF  
COLORADO...  
 
THE LARGE LOW PRESSURE SYSTEM THAT BROUGHT HEAVY SNOWS TO THE  
DAKOTAS AND UPPER MIDWEST HAS EXITED INTO ONTARIO THIS AFTERNOON.  
ONGOING SNOWFALL ACROSS INTERIOR NEW ENGLAND SHOULD COME TO AN END  
EARLY MONDAY, BUT LAKE ENHANCED SNOWS MAY CONTINUE THROUGH MONDAY  
DOWNWIND OF THE GREAT LAKES. THE WESTERN SIDE OF THE ASSOCIATED  
FRONTAL BOUNDARY IS FORECAST TO LINGER ACROSS THE GULF COAST  
STATES AND INTO THE SOUTHERN PLAINS WHICH SHOULD KEEP SHOWERS AND  
THUNDERSTORMS IN THE FORECAST ON MONDAY AND INTO TUESDAY AS WELL.  
 
RAIN AND MOUNTAIN SNOWS WILL CONTINUE THROUGH MONDAY ACROSS PARTS  
OF SOUTHERN CALIFORNIA AND THE SOUTHWEST AHEAD OF THE NEXT STORM  
SYSTEM. THE BEST CHANCE FOR SIGNIFICANT SNOWFALL IS ACROSS THE SAN  
JUAN MOUNTAINS OF COLORADO WHERE 1 TO 2 FEET ARE EXPECTED IN THE  
HIGHEST ELEVATIONS. AS THIS SYSTEM ENTERS THE SOUTHWEST BY  
TUESDAY, SHOWERS AND THUNDERSTORMS SHOULD INCREASE ACROSS THE  
SOUTHERN PLAINS. ATMOSPHERIC CONDITIONS COULD BE FAVORABLE TO  
SUPPORT POTENTIALLY HEAVY RAINFALL AND SEVERE WEATHER, ESPECIALLY  
LATE AFTERNOON AND INTO THE EVENING AT THE VERY END OF THE SHORT  
RANGE PERIOD. BOTH WPC AND SPC HAVE HIGHLIGHTED PARTS OF THIS  
REGION WITHIN A SLIGHT RISK FOR FLASH FLOODING AND SEVERE  
THUNDERSTORMS, RESPECTIVELY, ON TUESDAY. THIS SYSTEM IS FORECAST  
TO ORGANIZE INTO A SIGNIFICANT STORM BEYOND TUESDAY AND INTO THE  
BEGINNING OF THE MEDIUM RANGE PERIOD.  
 
ELSEWHERE, A COLD FRONT DROPPING INTO THE PACIFIC NORTHWEST WILL  
BRING RAIN AND MOUNTAIN SNOWS TO PARTS OF THE NORTHWEST LATE  
MONDAY INTO TUESDAY WITH HEAVY SNOWFALL POSSIBLE IN THE  
WASHINGTON/OREGON CASCADES. TEMPERATURES ACROSS MUCH OF THE WEST  
AND INTO THE PLAINS SHOULD BE BELOW TO WELL BELOW NORMAL WITH  
EXPANSIVE SURFACE HIGH PRESSURE ACROSS THE CENTRAL U.S. AND THE  
BIG STORM SYSTEM MOVING INTO THE SOUTHWEST. IN THE EAST, NEAR OR  
ABOVE NORMAL TEMPERATURES ON MONDAY SHOULD MODERATE TO NEAR OR  
BELOW AVERAGE BY TUESDAY AS THE CENTRAL U.S. HIGH PRESSURE AREA  
EXPANDS EASTWARD.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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