380  
FXUS01 KWBC 140747  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
347 AM EDT SUN APR 14 2019  
 
VALID 12Z SUN APR 14 2019 - 12Z TUE APR 16 2019  
 
...THE THREAT FOR SEVERE THUNDERSTORMS MOVES INTO EASTERN U.S.  
TODAY...  
 
...POSSIBLE FLOODING AND FLASH FLOODING FROM THE APPALACHIANS INTO  
PORTIONS OF THE NORTHEAST...  
 
...ROLLER COASTER RIDE OF TEMPERATURES CONTINUES FROM THE PLAINS  
TO THE EAST COAST...  
 
THE SPRING STORM SYSTEM RESPONSIBLE FOR AN OUTBREAK OF SEVERE  
STORMS FROM EASTERN TEXAS THROUGH THE LOWER MISSISSIPPI VALLEY ON  
SATURDAY WILL CONTINUE TO MOVE EAST TODAY AND TONIGHT. THE  
GREATEST THREAT TODAY WILL BE FROM THE UPPER OHIO VALLEY INTO THE  
CENTRAL TO SOUTHERN APPALACHIANS WHERE THE STORM PREDICTION CENTER  
HAS AN ENHANCED RISK IN PLACE. A LINE OF SEVERE THUNDERSTORMS,  
ONGOING FROM EARLY SUNDAY MORNING, IS EXPECTED TO MOVE INTO THE  
SOUTHEAST THROUGH THE REMAINDER OF THE MORNING AND EARLY AFTERNOON  
HOURS. SOME FRAGMENTATION AND POSSIBLE WEAKENING OF THIS LINE IS  
EXPECTED BUT A SECOND ROUND OF STORMS IS ANTICIPATED FARTHER NORTH  
INTO THE APPALACHIANS LATER THIS AFTERNOON. BOTH THE SOUTHERN AND  
NORTHERN LOCATIONS OF THIS STORM SYSTEM WILL SEE LOCALLY HEAVY  
RAIN FROM THUNDERSTORMS BUT THE MORE SUSCEPTIBLE TERRAIN OF THE  
APPALACHIANS AND PORTIONS OF NEW YORK WILL SEE A THREAT FOR  
FLOODING/FLASH FLOODING FROM ONE TO PERHAPS AS MUCH AS THREE  
INCHES OF RAIN BY MONDAY MORNING. ON THE NORTH SIDE OF THE SYSTEM,  
TEMPERATURES SHOULD BE COLD ENOUGH TO SUPPORT LIGHT TO MODERATE  
SNOW ACCUMULATIONS FROM NORTHERN ILLINOIS INTO LOWER MICHIGAN  
DURING THE DAY INTO THE EARLY PART OF TONIGHT. THE COMBINATION OF  
WARM TEMPERATURES, RAIN AND LINGERING SNOW COVER ACROSS PORTIONS  
OF NORTHERN NEW ENGLAND WILL GENERATE A THREAT FOR FLOODING OF  
RIVERS AND STREAMS THROUGH TUESDAY MORNING.  
 
BEHIND THE COLD FRONT, TODAY'S HIGH TEMPERATURE DEPARTURES WILL BE  
WELL BELOW AVERAGE FROM THE UPPER GREAT LAKES TO THE CENTRAL AND  
WESTERN GULF COAST, ROUGHLY 10 TO 20 DEGREES BELOW TYPICAL  
MID-APRIL AVERAGE HIGHS. THIS COOL WEATHER, THOUGH SOMEWHAT  
MODERATED, WILL REACH EAST OF THE MISSISSIPPI RIVER FOR MONDAY  
WHICH WILL BE IN CONTRAST TO THE ABOVE AVERAGE TEMPERATURES IN  
STORE FOR TODAY. ACROSS THE GREAT PLAINS, A CHILLY START THIS  
MORNING WILL BE FOLLOWED BY TEMPERATURES MUCH CLOSER TO AVERAGE  
FOR TODAY'S DAYTIME HIGHS, AND WELL INTO THE 80S FOR MONDAY FROM  
WESTERN KANSAS INTO WEST TEXAS (10 TO 15 DEGREES ABOVE AVERAGE).  
 
UNSETTLED WEATHER WILL CONTINUE THROUGH MONDAY FOR THE WESTERN  
U.S. AS A COLD FRONT MOVES INLAND DURING THE DAY TODAY. RAIN AND  
HIGHER ELEVATION SNOW WILL ACCOMPANY THIS SYSTEM WITH SOME  
MODERATE TO LOCALLY HEAVY SNOWFALL ACCUMULATIONS POSSIBLE IN THE  
HIGHER ELEVATIONS OF WESTERN WYOMING WITH AS MUCH AS 1 TO 2 FEET  
THROUGH MONDAY. YET ANOTHER STORM SYSTEM WILL APPROACH THE WEST  
COAST ON MONDAY, BRINGING A RENEWED ROUND OF RAIN AND MOUNTAIN  
SNOWS TO CALIFORNIA, OREGON AND THE GREAT BASIN FOR THE SECOND  
HALF OF MONDAY INTO TUESDAY.  
 
OTTO  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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