432  
FXUS01 KWBC 042001  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
400 PM EDT THU APR 04 2019  
 
VALID 00Z FRI APR 05 2019 - 00Z SUN APR 07 2019  
 
...HEAVY RAIN AND SEVERE WEATHER EXPECTED THROUGH TONIGHT FOR  
LOUISIANA...  
 
...RAIN MOVING ACROSS THE EASTERN U.S. FRIDAY WITH WINTRY WEATHER  
FOR NORTHERN NEW ENGLAND FRIDAY NIGHT...  
 
...MORE UNSETTLED WEATHER MOVING ACROSS THE WESTERN U.S. INTO THE  
WEEKEND...  
 
...STRONG THUNDERSTORMS FORECAST TO DEVELOP OVER TEXAS FRIDAY  
NIGHT...  
 
A WAVE OF A LOW PRESSURE SUPPORTED BY AN UPPER-LEVEL TROUGH WILL  
PROMOTE HEAVY RAIN ALONG WITH STRONG TO SEVERE THUNDERSTORMS  
THROUGH TONIGHT OVER LOUISIANA, ESPECIALLY FOR LOCATIONS NEAR THE  
GULF COAST. MOISTURE ASSOCIATED WITH THIS SYSTEM WILL COMBINE  
WITH ANOTHER UPPER-LEVEL SYSTEM SPREAD RAIN EASTWARD ACROSS THE  
OHIO VALLEY TONIGHT, AND MOVING INTO MUCH OF THE EAST COAST ON  
FRIDAY. IN ADDITION, MIXED RAIN AND SNOW WILL ALSO BE FOUND  
FARTHER NORTH ACROSS THE UPPER MIDWEST AND THE GREAT LAKES  
TONIGHT, MOVING ACROSS NORTHERN NEW ENGLAND ON FRIDAY. THE  
PRECIPITATION SHOULD BEGIN TO GRADUALLY MOVE OFF THE EAST COAST ON  
SATURDAY AS A LOW PRESSURE CENTER IS FORECAST TO DEVELOP JUST OF  
THE NORTH CAROLINA COAST. THIS LOW SHOULD NOT HAVE SIGNIFICANT  
IMPACTS TO THE WEATHER OTHERN THAN DRAWING IN DRIER AIR FROM THE  
NORTHWEST SATURDAY NIGHT.  
 
A COUPLE OF UPPER-LEVEL TROUGHS WILL MOVE INTO THE WESTERN U.S.  
OVER THE NEXT COUPLE OF DAYS, ALONG WITH ASSOCIATED FRONTS AT THE  
SURFACE. THIS WILL LEAD TO INCREASING PRECIPITATION ALONG THE WEST  
COAST ON THURSDAY AND THE INTERMOUNTAIN WEST AND ROCKIES BY  
FRIDAY. LOWER ELEVATION RAIN AND HIGHER ELEVATION SNOW IS  
EXPECTED, AND THE HIGHEST SNOWFALL TOTALS ARE FORECAST IN THE  
SIERRA NEVADA AND THE BITTERROOT RANGE IN IDAHO, WITH 6 TO 10  
INCHES OF SNOW POSSIBLE THERE.  
 
AS UPPER-LEVEL ENERGY PUSHES INTO THE SOUTHWEST LATE FRIDAY,  
ANOTHER ROUND OF THUNDERSTORMS IS FORECAST FOR THE SOUTHERN PLAINS  
ON FRIDAY AND INTO SATURDAY, WITH SEVERE STORMS POSSIBLE.  
SCATTERED THUNDERSTORMS SHOULD CONTINUE IN THE SOUTHEAST THROUGH  
THE NEXT COUPLE OF DAYS AS A FRONT LINGERS THERE. IN DRIER AIR TO  
THE WEST, AN ELEVATED RISK OF FIRE WEATHER IS IN PLACE FOR MUCH OF  
NEW MEXICO AND FAR WESTERN PARTS OF THE TEXAS AND OKLAHOMA  
PANHANDLES ON FRIDAY. ALSO REGARDING FIRE WEATHER, PARTS OF THE  
NORTHEAST COULD ONCE AGAIN SEE CONDITIONS FAVORABLE FOR THE SPREAD  
OF FIRES ON THURSDAY.  
 
TEMPERATURE-WISE, THE CENTRAL U.S. WILL BE INCREASINGLY WARM ON  
THURSDAY AND ESPECIALLY INTO FRIDAY, WHEN HIGH TEMPERATURES ARE  
FORECAST AROUND 10 TO 20 DEGREES ABOVE AVERAGE. CALIFORNIA WILL BE  
A BIT COOLER THAN AVERAGE WITH WEATHER SYSTEMS COMING THROUGH THE  
WEST, AND THE NORTHEAST IS EXPECTING COLDER THAN AVERAGE HIGH  
TEMPERATURES AS WELL. OVERNIGHT LOWS WILL BE ABOVE AVERAGE ACROSS  
BASICALLY THE ENTIRE CONUS BY SATURDAY MORNING, AFTER COOLER THAN  
AVERAGE LOWS ARE EXPECTED IN THE NORTHEAST ON FRIDAY.  
 
KONG/TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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