264  
FXUS01 KWBC 191952  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
351 PM EDT TUE MAR 19 2019  
 
VALID 00Z WED MAR 20 2019 - 00Z FRI MAR 22 2019  
 
...MAJOR TO HISTORIC RIVER FLOODING WILL CONTINUE ACROSS PARTS OF  
THE MISSISSIPPI AND MISSOURI RIVER BASINS...  
 
...COASTAL STORM TO BRING UNSETTLED WEATHER TO THE MID-ATLANTIC  
AND NORTHEAST BY THURSDAY...  
 
MAJOR TO HISTORIC AND CATASTROPHIC FLOODING WILL CONTINUE ACROSS  
PARTS OF THE MISSOURI AND MISSISSIPPI RIVER BASINS DUE TO RAPID  
SNOWMELT AS A RESULT OF HEAVY RAINFALL LAST WEEK. A ROUND OF LIGHT  
RAIN SHOWERS MOVING THROUGH TUESDAY EVENING MAY ONLY EXACERBATE  
FLOODING ACROSS THE REGION AS WELL. FLOOD WARNINGS AND ADVISORIES  
REMAIN IN EFFECT, MAINLY FOCUSED ACROSS PARTS OF EASTERN NEBRASKA  
AND WESTERN IOWA. AREAL FLOODING IS ALSO A CONCERN ACROSS PARTS OF  
THE NORTHWEST AND NORTHERN ROCKIES/HIGH PLAINS AS WELL, AS WARM  
TEMPERATURES LEAD TO ACCELERATED SNOWMELT AND THE POTENTIAL FOR  
ICE JAMS.  
 
A FRONT LINGERING ACROSS SOUTHERN FLORIDA WILL CONTINUE TO PRODUCE  
SHOWERS AND THUNDERSTORMS THROUGH LATE TUESDAY NIGHT. IN THE  
CENTRAL STATES, A COUPLE OF WEAK SYSTEMS MAY BRING MAINLY LIGHT  
RAIN (WITH SNOW POSSIBLE TO THE NORTH) FROM THE CENTRAL PLAINS  
TUESDAY NIGHT, INTO THE MISSISSIPPI VALLEY, GREAT LAKES, AND OHIO  
VALLEY WEDNESDAY INTO THURSDAY. AT THE SAME TIME A COLD FRONT  
MOVING INTO CALIFORNIA AND THE SOUTHWEST WEDNESDAY AND THURSDAY  
WILL BRING INCREASED CHANCES FOR RAIN AND MOUNTAIN SNOWS TO  
CALIFORNIA, THE CENTRAL GREAT BASIN, AND INTO THE SOUTHWEST/FOUR  
CORNERS REGION. BY THURSDAY MORNING, A LOW PRESSURE SYSTEM WILL  
DEVELOP ALONG THE NORTH CAROLINA COAST AND SWING MOISTURE INTO THE  
MID-ATLANTIC STATES. THIS SYSTEM WILL TRACK ALONG THE EAST COAST  
AND LEAD TO MODERATE RAIN ACROSS THE NORTHEAST BY THURSDAY NIGHT.  
TEMPERATURES EAST OF THE ROCKIES SHOULD BE MOSTLY NEAR OR BELOW  
NORMAL FOR THIS TIME OF THE YEAR WITH THE GREATEST DEPARTURES FROM  
NORMAL ACROSS PARTS OF WEST TEXAS, THE HIGH PLAINS, AND  
FLORIDA/THE SOUTHEAST.  
 
SNELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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