265
FXUS01 KWBC 031058
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
657 AM EDT WED APR 03 2024
VALID 12Z WED APR 03 2024 - 12Z FRI APR 05 2024
...HEAVY SNOW OVER THE UPPER GREAT LAKES, UPSTATE NEW YORK, AND
NORTHERN NEW ENGLAND ON WEDNESDAY; HEAVY SNOW OVER THE SIERRA
NEVADA MOUNTAINS AND CENTRAL APPALACHIANS ON THURSDAY...
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF THE
MID-ATLANTIC AND SOUTHERN NEW ENGLAND ON WEDNESDAY...
...THERE IS A SIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE
MID-ATLANTIC COAST TO THE SOUTHEAST COAST AND FLORIDA PENINSULA ON
WEDNESDAY...
A DEEP STORM OVER THE GREAT LAKES WILL MOVE SOUTHEASTWARD TO THE
MID-ATLANTIC COAST BY THURSDAY EVENING AND NORTHEASTWARD TO THE
GULF OF MAINE BY FRIDAY. THE SYSTEM WILL PRODUCE A LATE-SEASON
WINTER STORM ACROSS PORTIONS OF THE GREAT LAKES AND THE NORTHEAST
FROM WEDNESDAY INTO FRIDAY. THE WESTERN PORTION OF THE UPPER
PENINSULA OF MICHIGAN IS FORECAST TO RECEIVE HEAVY SNOW THROUGH
WEDNESDAY EVENING. SNOWFALL ACCUMULATIONS OF AS MUCH AS 1 TO 2
FEET ARE EXPECTED IN PARTS OF NORTHERN WISCONSIN AND THE WESTERN
PORTION OF THE UPPER PENINSULA OF MICHIGAN.
THE SAME STORM WILL PRODUCE NORTHEAST SNOW AND WIND WEDNESDAY
THROUGH FRIDAY. HEAVY, WET SNOW AND SOME SLEET WILL SPREAD INTO
THE NORTHEAST ON WEDNESDAY AND CONTINUE INTO FRIDAY. PORTIONS OF
NORTHERN NEW YORK AND NORTHERN NEW ENGLAND WILL LIKELY SEE
SIGNIFICANT SNOW ACCUMULATIONS OF OVER 12 INCHES.
THE SYSTEM WILL CREATE SIGNIFICANT IMPACTS FROM HEAVY SNOW AND
WIND, AND THE COMBINATION OF HEAVY SNOW RATES AND GUSTY WINDS WILL
LEAD TO DANGEROUS TRAVEL CONDITIONS, WITH WHITEOUT CONDITIONS AND
SNOW-COVERED ROADS. THE COMBINATION OF WET SNOW, HIGH SNOW LOAD,
AND STRONG WIND GUSTS COULD ALSO RESULT IN TREE DAMAGE AND POWER
OUTAGES. ON THURSDAY, HEAVY SNOW WILL DEVELOP OVER PARTS OF THE
CENTRAL APPALACHIANS.
FURTHERMORE, PROLONGED ONSHORE WINDS LATE WEDNESDAY AND CONTINUING
THROUGH THURSDAY WILL RESULT IN MODERATE COASTAL FLOODING FOR
PORTIONS OF THE NORTHEAST COAST. IMPACTS INCLUDE WIDESPREAD
ROADWAY FLOODING, COASTAL AND BAYSIDE FLOODING, IMPASSABLE ROADS,
AND SOME DAMAGE TO VULNERABLE STRUCTURES.
MOREOVER, ALONG THE ASSOCIATED FRONT EXTENDING FROM THE LOWER
GREAT LAKES TO THE CENTRAL APPALACHIANS SOUTHWARD TO THE CENTRAL
GULF COAST WILL MOVE OFF MOST OF THE EAST COAST OVERNIGHT
WEDNESDAY. THE BOUNDARY WILL AID IN PRODUCING SHOWERS, AND SEVERE
THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE MID-ATLANTIC AND
SOUTHEAST COAST. THEREFORE, THE SPC HAS ISSUED A SLIGHT RISK
(LEVEL 2/5) OF SEVERE THUNDERSTORMS OVER PARTS OF THE MID-ATLANTIC
COAST TO THE SOUTHEAST COAST AND FLORIDA PENINSULA THROUGH
THURSDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS
ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND
A FEW TORNADOES.
SHOWERS AND THUNDERSTORMS WILL PRODUCE HEAVY RAIN OVER PARTS OF
THE MID-ATLANTIC AND NORTHEAST. THEREFORE, THE WPC HAS ISSUED A
SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL OVER PARTS OF THE
MID-ATLANTIC AND SOUTHERN NEW ENGLAND THROUGH THURSDAY MORNING.
THE ASSOCIATED HEAVY RAIN WILL CREATE MAINLY LOCALIZED AREAS OF
FLASH FLOODING, WITH URBAN AREAS, ROADS, AND SMALL STREAMS THE
MOST VULNERABLE. THE THREAT OF SEVERE THUNDERSTORMS AND EXCESSIVE
RAINFALL ENDS ON THURSDAY.
MEANWHILE, A FRONT MOVING INLAND OVER THE PACIFIC NORTHWEST INTO
NORTHERN CALIFORNIA WILL MOVE EASTWARD TO THE NORTHERN ROCKIES TO
THE GREAT BASIN AND SOUTHWEST BY FRIDAY. ON WEDNESDAY, THE SYSTEM
WILL CREATE COASTAL RAIN AND HIGHER-ELEVATION SNOW OVER PARTS OF
THE PACIFIC NORTHWEST/ NORTHERN INTERMOUNTAIN REGION, MOVING
INLAND TO THE NORTHERN INTERMOUNTAIN REGION, GREAT BASIN, AND
NORTHERN CALIFORNIA OVERNIGHT. THE SNOW LEVELS WILL LOWER AFTER
THE FRONT PASSES BY OVER THE NORTHWEST. THE COAST/LOWER ELEVATION
RAIN AND HIGHER ELEVATION SNOW WILL CONTINUE OVER THE PACIFIC
NORTHWEST/NORTHERN INTERMOUNTAIN REGION THROUGH FRIDAY.
ON THURSDAY, RAIN AND HIGHER-ELEVATION SNOW WILL MOVE INTO CENTRAL
CALIFORNIA AND EXPAND INTO THE GREAT BASIN. OVERNIGHT THURSDAY,
RAIN WILL MOVE INTO SOUTHERN CALIFORNIA. HEAVY SNOW WILL DEVELOP
OVER THE SIERRA NEVADA MOUNTAINS ON THURSDAY INTO FRIDAY.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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