565  
FXUS01 KWBC 180706  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
306 AM EDT MON MAR 18 2019  
 
VALID 12Z MON MAR 18 2019 - 12Z WED MAR 20 2019  
 
...HEAVY RAINFALL POSSIBLE ALONG A LINGERING FRONTAL BOUNDARY  
ACROSS SOUTHERN FLORIDA...  
 
...MAJOR TO HISTORIC RIVER FLOODING WILL CONTINUE ACROSS PARTS OF  
THE MISSISSIPPI AND MISSOURI RIVER BASINS...  
 
...WARM TEMPERATURES AND SNOW MELT MAY LEAD TO AREAL FLOODING  
ACROSS PORTIONS OF THE NORTHWEST AND NORTHERN/CENTRAL ROCKIES...  
 
THE WEATHER WILL CONTINUE TO BE FAIRLY QUIET ACROSS MOST OF THE  
LOWER 48 DURING THE SHORT RANGE PERIOD. THE EXCEPTION TO THIS WILL  
BE ACROSS SOUTHERN FLORIDA WHERE LOCALLY HEAVY RAINFALL IS  
POSSIBLE ALONG A LINGERING FRONTAL BOUNDARY MONDAY INTO TUESDAY.  
ELSEWHERE, LIGHT RAIN OR SNOW IS POSSIBLE BY TUESDAY FROM PARTS OF  
THE CENTRAL/SOUTHERN PLAINS INTO THE MID-MISSISSIPPI VALLEY; AND  
INCREASED PRECIPITATION CHANCES OUT WEST BY WEDNESDAY AS A COLD  
FRONT APPROACHES CALIFORNIA. MOST LOCATIONS FROM THE ROCKIES  
EASTWARD WILL BE DOMINATED BY SURFACE HIGH PRESSURE WHICH WILL  
KEEP TEMPERATURES NEAR OR BELOW NORMAL FOR THIS TIME OF THE YEAR.  
THE GREATEST DEPARTURES FROM NORMAL (10 TO 20 DEGREES) ARE  
FORECAST ACROSS PARTS OF THE SOUTHERN PLAINS AS WELL AS THE  
APPALACHIANS INTO THE EAST.  
 
MAJOR TO HISTORIC RIVER FLOODING IS EXPECTED TO CONTINUE ACROSS  
PARTS OF THE MISSOURI AND MISSISSIPPI RIVER BASINS DUE TO RAPID  
SNOW MELT THE PAST FEW DAYS. FLOOD WARNINGS AND ADVISORIES REMAIN  
IN EFFECT, MAINLY ACROSS EASTERN NEBRASKA AND INTO PARTS OF IOWA.  
FLOODING IS ALSO A CONCERN ACROSS PARTS OF THE NORTHERN GREAT  
BASIN INTO THE NORTHERN/CENTRAL ROCKIES AS WARMER THAN AVERAGE  
TEMPERATURES LEAD TO ACCELERATED SNOW MELT FOR THE LOWER  
ELEVATIONS.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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