988  
FXUS01 KWBC 280616  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
216 AM EDT SUN APR 28 2024  
 
VALID 12Z SUN APR 28 2024 - 12Z TUE APR 30 2024  
 
...MORE ROUNDS OF EXCESSIVE RAINFALL AND SEVERE WEATHER EXPECTED  
TO PUSH EASTWARD INTO THE LOWER MISSISSIPPI VALLEY TODAY AND  
MONDAY...  
 
...HIGH-ELEVATION SNOW IS FORECAST TO SPREAD INLAND FROM THE  
PACIFIC NORTHWEST INTO THE NORTHERN ROCKIES ON MONDAY...  
 
...WARMER THAN AVERAGE TEMPERATURES SPREADS FROM MIDWEST INTO  
MID-ATLANTIC TODAY WHILE WELL BELOW AVERAGE TEMPERATURES SHIFT  
FROM THE FOUR CORNERS AND ROCKIES INTO THE NORTHERN PLAINS...  
 
MORE ACTIVE AND UNSETTLED WEATHER IS FORECAST TO CONTINUE ACROSS  
THE MID-SECTION OF THE COUNTRY THROUGH THE REMAINDER OF THE  
WEEKEND INTO MONDAY. MULTIPLE DISTURBANCES EMBEDDED WITHIN A  
SLOW-MOVING UPPER-LEVEL TROUGH RESPONSIBLE FOR THE ACTIVE WEATHER  
ARE CURRENTLY DEVELOPING ANOTHER LOW PRESSURE SYSTEM OVER THE  
CENTRAL PLAINS. TODAY, THE MAIN AREA OF THUNDERSTORMS WILL PUSH  
FARTHER EASTWARD TOWARD THE MID AND LOWER MISSISSIPPI VALLEY WITH  
A SLIGHTLY LOWER THREAT OF SEVERE WEATHER THAN SATURDAY.  
MEANWHILE, THE HEAVIEST RAINS SHOULD PUSH FARTHER SOUTHEAST INTO  
THE ARKLATEX REGION AS THE TRAILING COLD FRONT ASSOCIATED WITH THE  
LOW PRESSURE SYSTEM BEGINS TO WEAKEN. THE CENTER OF THE LOW IS  
FORECAST TO TRACK NORTHEAST ACROSS THE CENTRAL PLAINS ON SUNDAY,  
REACHING INTO THE UPPER MIDWEST ON MONDAY. STRONG TO LOCALLY  
SEVERE THUNDERSTORMS CAN BE EXPECTED TO EXTEND NORTHEAST ACROSS  
THESE AREAS INCLUDING THE MIDWEST AHEAD OF A WARM FRONT TO THE  
EAST OF THE LOW PRESSURE CENTER. MEANWHILE, THE THREAT OF HEAVY  
RAIN WILL PUSH FARTHER SOUTHEAST INTO THE LOWER TO MID-MISSISSIPPI  
VALLEY AS THE COLD FRONT PUSHES EASTWARD. THERE'S ARE SLIGHT RISK  
(AT LEAST 15%) OF EXCESSIVE RAINFALL LEADING TO FLASH FLOODING  
OVER PORTIONS OF THE EASTERN SOUTHERN PLAINS AND LOWER MISSISSIPPI  
VALLEY TODAY AND EXTENDING INTO JUST THE LOWER MISSISSIPPI  
VALLEY/CENTRAL GULF COAST ON MONDAY. THE STORM PREDICTION CENTER  
ISSUED AN ENHANCED RISK (LEVEL 3/5) OF SEVERE THUNDERSTORMS ACROSS  
PORTIONS OF THE EASTERN SOUTHERN PLAINS AND MIDDLE/LOWER  
MISSISSIPPI VALLEY TODAY.  
 
ELSEWHERE, ANOTHER LOW PRESSURE SYSTEM WILL BEGIN TO MOVE AWAY  
FROM THE GREAT LAKES INTO CANADA WITH SCATTERED SHOWERS ENDING  
OVER THE UPPER GREAT LAKES BUT CONTINUING FROM THE LOWER GREAT  
LAKES INTO NEW ENGLAND. STRONG SOUTHERLY FLOW BEHIND A HIGH  
PRESSURE SYSTEM WILL BRING VERY WARM AIR NORTHWARD INTO THE EAST  
COAST THROUGH THE NEXT COUPLE OF DAYS WITH HIGH TEMPERATURES  
CLIMBING WELL INTO THE 80S TO POSSIBLY NEAR 90 DEGREES FOR THE  
INTERIOR MID-ATLANTIC. THESE TEMPERATURES WILL BE IN CONTRAST TO  
THE COOL TEMPERATURES EXPECTED FOR THE PACIFIC NORTHWEST BY MONDAY  
AS THE NEXT UPPER-LEVEL TROUGH FROM THE PACIFIC IS FORECAST TO  
PUSH INLAND. THIS TROUGH WILL BRING WIDESPREAD HIGH-ELEVATION  
SNOW AND LOWER ELEVATION RAIN ACROSS THE PACIFIC NORTHWEST TOWARD  
THE NORTHERN ROCKIES ON MONDAY WITH INCREASINGLY WINDY CONDITIONS  
AS A LOW PRESSURE SYSTEM BEGINS TO DEVELOP OVER THE NORTHERN HIGH  
PLAINS INTO SOUTHERN CANADA.  
 
KEBEDE/KONG  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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