993  
FXUS01 KWBC 301700  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
1259 PM EDT SAT MAR 30 2019  
 
VALID 00Z SUN MAR 31 2019 - 00Z TUE APR 02 2019  
 
...THUNDERSTORMS WITH HEAVY RAIN TO CONTINUE ACROSS THE OHIO AND  
TENNESSEE VALLEYS THIS AFTERNOON & EVENING...  
   
..THE WEST WARMS WHILE THE EAST COOLS ON SUNDAY
 
 
A STRONG COLD FRONT WILL MOVE THROUGH THE MISSISSIPPI AND OHIO  
VALLEYS ON SATURDAY AND BY THE EASTERN SEABOARD ON SUNDAY.  
WIDESPREAD RAIN AND THUNDERSTORMS ARE FORECAST NEAR THE FRONT FROM  
THE LOWER MISSISSIPPI VALLEY NORTHEASTWARD THROUGH THE OHIO VALLEY  
THIS AFTERNOON AND EVENING. A SLIGHT RISK OF EXCESSIVE RAINFALL  
EXISTS FOR PORTIONS OF THE OHIO VALLEY WHICH ARE EXPECTING THE  
HEAVIEST RAIN TOTALS WHILE THE STORM PREDICTION CENTER HAS  
OUTLOOKED A SLIGHT RISK OF SEVERE WEATHER IN THE TENNESSEE VALLEY  
TODAY. RAIN WILL SPREAD TO THE EASTERN SEABOARD BY SUNDAY MORNING.  
WITHIN THE LOW PRESSURE SYSTEM'S COLD SECTOR, SNOW IS EXPECTED  
THROUGH THE LOWER GREAT LAKES REGION AND INTO SOUTHEASTERN CANADA.  
A SWATH OF 4 TO 6 INCHES OF SNOW IS FORECAST FOR THE LOWER GREAT  
LAKES REGION INTO PARTS OF NORTHERN NEW ENGLAND THROUGH SUNDAY  
NIGHT, AND A LIGHT GLAZE OF ICE IS POSSIBLE THERE AS WELL. AFTER  
THE FRONT PASSES, WEATHER CONDITIONS SHOULD DRY OUT IN MOST AREAS,  
THOUGH SKIRMISHES OF RAIN SHOWERS COULD CONTINUE IN THE GULF COAST  
STATES THROUGH MONDAY MORNING WITH SUFFICIENT MOISTURE FROM THE  
GULF.  
 
FARTHER WEST, AN UPPER-LEVEL LOW IS FORECAST TO MOVE SLOWLY  
THROUGH THE FOUR CORNERS REGION THROUGH THE WEEKEND, WHICH WILL  
ALLOW SOME SNOW TO ACCUMULATE IN THE CENTRAL AND SOUTHERN ROCKIES  
AND KEEP A FRONTAL BOUNDARY MOSTLY SOUTH OF THE UNITED  
STATES/MEXICAN BORDER. SNOWFALL OF 4 TO 8 INCHES IS POSSIBLE IN  
THE HIGHER ELEVATIONS OF THE SAN JUAN MOUNTAINS. BY SUNDAY NIGHT,  
LIGHT SNOW IS EXPECTED TO FORM IN THE NORTHERN ROCKIES AND  
NORTHERN HIGH PLAINS, ASSOCIATED WITH A WEAK WAVE OF LOW PRESSURE.  
A DEEP LAYER LOW APPROACHING THE WEST COAST WILL INCREASE RAIN  
CHANCES LATE SUNDAY INTO MONDAY MORNING IN THE PACIFIC NORTHWEST.  
 
THIS AFTERNOON, HIGH TEMPERATURES WILL BE 15 TO 25 DEGREES BELOW  
NORMAL IN THE CENTRAL/SOUTHERN PLAINS TO MIDDLE MISSISSIPPI VALLEY  
BEHIND THE STRONG COLD FRONT. AHEAD OF THE FRONT, THE EAST IS  
EXPECTING TEMPERATURES 10 TO 20 DEGREES ABOVE AVERAGE ON SATURDAY,  
BUT BY SUNDAY, THE OHIO AND TENNESSEE VALLEYS WILL SEE HIGH  
TEMPERATURES 10 TO 20 DEGREES BELOW AVERAGE, WHICH IS A LARGE  
TEMPERATURE SWING BETWEEN SATURDAY AND SUNDAY. THE WEST COAST IS  
EXPECTED TO WARM UP AND BE AROUND 10 DEGREES ABOVE AVERAGE THIS  
WEEKEND.  
 
ROTH/TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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