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FXUS01 KWBC 211956

PMDSPD



Short Range Forecast Discussion

NWS Weather Prediction Center College Park MD

356 PM EDT Sun Apr 21 2024



Valid 00Z Mon Apr 22 2024 - 00Z Wed Apr 24 2024



...There is a Marginal Risk of severe thunderstorms over parts of

the Florida Peninsula through Monday...



...Light snow along the southern shore of Lake Superior on

Tuesday...



...Temperatures will be above average over the Southwest;

temperatures will be below average from the Northeast to the

Southeast, then to the Southern Plains...



A front extending across the Florida Peninsula Coast will slowly

move southward of the Florida by Monday afternoon. Showers with

strong to severe thunderstorms will develop along the boundary.

Therefore, the SPC has issued a Marginal Risk (level 1/5) of

severe thunderstorms over parts of the Florida Peninsula through

Monday morning. The hazards associated with these thunderstorms

are frequent lightning, severe thunderstorm wind gusts, hail, and

a minimal threat of tornadoes.



On Monday, the front moves south of Florida by afternoon. Showers

with strong to severe thunderstorms will develop over parts of the

Florida Peninsula until the boundary moves offshore. Therefore,

the SPC has issued a Marginal Risk (level 1/5) of severe

thunderstorms over parts of the Florida Peninsula through Monday

afternoon. The hazards associated with these thunderstorms are

frequent lightning, severe thunderstorm wind gusts, hail, and a

few tornadoes.



Meanwhile, high pressure over the Middle Mississippi

Valley/Southern Plains will gradually shift eastward, reaching off

the Southeast Coast by Tuesday evening. Clear skies and light wind

will help allow temperatures to be 5 to 15 degrees below average

from the Northeast to the Southeast and then to the Southern

Plains, which will experience a slight warming trend by Tuesday

afternoon. In contrast, temperatures will be 5 to 15 degrees above

average over parts of the Southwest through Tuesday evening.



A second front over the Northern Rockies to the Great Basin will

also move eastward to the Great Lakes to the Southern Plains by

Tuesday. On Monday, as the boundary moves onto the Plains, a weak

plume of moisture flows from the Western Gulf of Mexico to the

Upper Midwest, aiding in the development of rain over parts of the

Northern Plains and the Upper Mississippi Valley overnight Monday

into Tuesday. On Tuesday, the rain moves into the Great Lakes. By

Tuesday evening, the rain will extend from the Lower Great Lakes

southwestward to the Middle Mississippi Valley. Cold high pressure

over Hudson Bay will stream cold air over Lake Superior,

developing light snow over the southern shore of Lake Superior.





Ziegenfelder





Graphics available at

https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php



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