646  
FXUS01 KWBC 211935  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
334 PM EDT THU MAR 21 2024  
 
VALID 00Z FRI MAR 22 2024 - 00Z SUN MAR 24 2024  
 
...EARLY SPRING HEAVY SNOWS EXPECTED FROM THE UPPER MISSISSIPPI  
VALLEY INTO THE GREAT LAKES, NORTHERN NY STATE INTO NORTHERN NEW  
ENGLAND...  
 
...WIDESPREAD WET WEATHER EXPECTED FROM EAST TEXAS, ACROSS THE  
SOUTH, MUCH OF FLORIDA AND THE EASTERN SEABOARD...  
 
...THE BEGINNING OF A WET PATTERN FOR THE PACIFIC NORTHWEST, SOUTH  
INTO NORTHERN TO CENTRAL CALIFORNIA...  
 
WINTER WEATHER WILL CONTINUE TO DOMINATE THE NORTHERN TIER OF THE  
NATION DURING THIS FIRST WEEK OF SPRING 2024. IN THE WAKE OF  
HEAVY SNOWS THAT HAVE FALLEN ACROSS PORTIONS OF NORTHERN NEW  
ENGLAND OVER THE PAST 24 HOURS, ADDITIONAL HEAVY SNOW IS EXPECTED  
TO SPREAD EASTWARD THURSDAY NIGHT INTO FRIDAY FROM THE NORTHERN  
PLAINS, ACROSS THE UPPER MISSISSIPPI VALLEY AND INTO THE LOWER  
GREAT LAKES. THIS HEAVY SNOW WILL THEN PUSH EASTWARD INTO  
NORTHERN NY STATE AND NORTHERN NEW ENGLAND ON SATURDAY. ACROSS  
THESE AREAS, SNOWFALL ACCUMULATIONS OF 8 TO 12 INCHES ARE  
POSSIBLE. DURING THE DAY ON SATURDAY, YET ANOTHER ROUND OF WINTRY  
WEATHER WITH ACCUMULATING SNOWS WILL BEGIN TO DEVELOP ACROSS THE  
NORTHERN HIGH PLAINS AND SPREAD EASTWARD THROUGH THE REMAINDER OF  
THE NORTHERN PLAINS SUNDAY AND INTO THE EARLY PART OF NEXT WEEK.  
IN ADDITION TO THE POTENTIAL SERIES OF SNOW EVENTS ACROSS THE  
NORTHERN TIER, TEMPERATURES WILL REMAIN WELL BELOW AVERAGE FOR THE  
END OF THE WORK WEEK AND INTO THE WEEKEND.  
 
AT THE SAME TIME THAT SNOWS SPREAD EASTWARD ACROSS THE NORTHERN  
TIER OF THE NATION, A WIDESPREAD RAIN EVENT WILL CONTINUE TO  
EXPAND FROM THE WESTERN GULF COAST THURSDAY AFTERNOON, EASTWARD  
ACROSS LARGE PORTIONS OF THE SOUTH AND FLORIDA THURSDAY NIGHT INTO  
FRIDAY. THIS WIDESPREAD HEAVY RAIN WILL THEN PUSH NORTHWARD ALONG  
MUCH OF THE EASTERN SEABOARD FRIDAY INTO SATURDAY. SOME OF THE  
HEAVIEST RAINFALL TOTALS ARE EXPECTED ACROSS SOUTH FLORIDA FRIDAY  
AFTERNOON INTO EARLY SATURDAY, WITH THE POTENTIAL FOR URBANIZED  
FLASH FLOODING, ESPECIALLY ALONG THE SOUTHEAST COASTAL AREAS OF  
THE STATE. LOCALIZED FLASH FLOODING ALSO POSSIBLE ALONG THE  
MID-ATLANTIC COAST, INCLUDING THE URBAN CORRIDOR FROM DC TO BOSTON  
WHERE RAINFALL TOTALS OF 2 TO 3 INCHES ARE POSSIBLE.  
 
AN ACTIVE WET WEATHER PATTERN WILL ALSO TO BEGIN ALONG LARGE  
PORTIONS OF THE WEST COAST FROM THE PACIFIC NORTHWEST, SOUTH INTO  
NORTHERN TO CENTRAL CALIFORNIA. PRECIPITATION WILL BEGIN TO PUSH  
INLAND ON FRIDAY ACROSS THESE AREAS, WITH ROUNDS OF ADDITIONAL  
PRECIPITATION EXPECTED INTO THE WEEKEND, WITH HEAVY SNOWS IN THE 1  
TO 3 FOOT RANGE EXPECTED THROUGH THE SIERRA. WHILE THERE MAY BE A  
BREAK TO THE WET WEST COAST PATTERN EARLY NEXT WEEK, THE OVERALL  
WET WINTER PATTERN THAT HAS AFFECTED THE WEST COAST WILL CONTINUE  
LATER NEXT WEEK AS ADDITIONAL STORM SYSTEMS PUSH INLAND.  
 
ORAVEC  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 
 
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