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FXUS01 KWBC 030801

PMDSPD



Short Range Forecast Discussion

NWS Weather Prediction Center College Park MD

400 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 severe thunderstorms 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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