042
FXUS01 KWBC 220800
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT FRI MAR 22 2024
VALID 12Z FRI MAR 22 2024 - 12Z SUN MAR 24 2024
...HEAVY SNOW LIKELY FOR PORTIONS OF THE LOWER GREAT LAKES AND
INTERIOR NORTHEAST...
..A WET WEEKEND AHEAD FOR THE EAST AND WEST COASTS
...SIGNIFICANT WINTER STORM LIKELY ACROSS THE NORTHERN PLAINS AND
INTO THE UPPER MIDWEST LATE THIS WEEKEND INTO EARLY NEXT WEEK...
A DEVELOPING LOW PRESSURE SYSTEM WILL PRODUCE SNOW SHOWERS ACROSS
PARTS OF THE MIDWEST AND UPPER GREAT LAKES TODAY. THIS SAME SYSTEM
WILL SHIFT INTO THE OHIO VALLEY THIS EVENING AND DUMP A SWATH OF
HEAVY SNOW FROM DOWNWIND AREAS OF LAKE ONTARIO INTO MUCH OF
CENTRAL/NORTHERN NEW ENGLAND. SNOWFALL TOTALS OF 6-12 INCHES ARE
EXPECTED BY SUNDAY MORNING FOR THOSE AREAS.
A SECOND SYSTEM WILL TRACK ACROSS THE GULF COAST AND DUMP SHOWERS
AND THUNDERSTORMS OVER THE SOUTHEAST AND INTO THE MID-ATLANTIC
TODAY/TONIGHT. HEAVY RAINFALL WITHIN SCATTERED TO ISOLATED
THUNDERSTORMS WILL SPREAD ACROSS THE CAROLINA COAST AND UP THE
MID-ATLANTIC TO NORTHEAST URBAN CORRIDOR WHERE 1-3 INCHES OF
RAINFALL ARE POSSIBLE WITH ISOLATED HIGHER AMOUNTS. A SLIGHT RISK
OF EXCESSIVE RAINFALL LEADING TO FLASH FLOODING (LEVEL 2/4) IS IN
EFFECT FROM SOUTHERN MARYLAND AND THE DC METRO AREA UP THE COAST
THROUGH PHILLY, NYC AND INTO BOSTON'S METRO ON SATURDAY.
A THIRD SYSTEM IN THE GULF OF MEXICO WILL PROPAGATE TOWARD THE
STRAITS OF FLORIDA WHERE IT WILL STALL OUT LATER TODAY. ANOMALOUS
MOISTURE FROM THE SUBTROPICAL PACIFIC WILL JOIN WITH MOISTURE FROM
THE GULF OF MEXICO TO PRODUCE HEAVY TO EXCESSIVE RAINFALL AS WELL
AS STRONG TO SEVERE THUNDERSTORMS OVER EXTREME SOUTHERN PORTIONS
OF FLORIDA THIS AFTERNOON AND EVENING. THUS, SLIGHT RISKS OF
EXCESSIVE RAINFALL (LEVEL 2/4) AND SEVERE THUNDERSTORMS (LEVEL
2/5) ARE IN EFFECT FOR THIS AREA.
ELSEWHERE, A DEEP LOW PRESSURE SYSTEM WILL BRING UNSETTLED WEATHER
TO THE WEST THIS WEEKEND. HEAVY RAIN IS LIKELY TO FOCUS OVER
COASTAL AREAS OF NORTHERN CALIFORNIA INTO SOUTHERN OREGON, WHILE
HEAVY SNOW DEVELOPS OVER THE NORTHERN/CENTRAL SIERRA AND SHASTA
SISKIYOUS. ANYWHERE BETWEEN 2-4 FEET OF SNOW ARE LIKELY FOR THOSE
AREAS WITH ISOLATED HIGHER AMOUNTS POSSIBLE. THIS SYSTEM WILL
WEAKEN AS IT MOVES INLAND AND SPREADS SNOW SHOWERS ACROSS THE
ROCKIES ON SATURDAY. BY SUNDAY, THIS SYSTEM WILL BEGIN TO
REDEVELOP OVER THE FRONT RANGE INTO A SIGNIFICANT WINTER STORM.
KEBEDE
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