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WWUS20 KWNS 011643

SEL1

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DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-CWZ000-020000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 331

NWS Storm Prediction Center Norman OK

1240 PM EDT Thu Jul 1 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  District Of Columbia

  Delaware

  Maryland

  Central and southern New Jersey

  Extreme southeastern Pennsylvania

  Central and northeastern Virginia

  Coastal Waters



* Effective this Thursday afternoon and evening from 1240 PM

  until 800 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Scattered thunderstorms are expected to form near and east

of the Blue Ridge this afternoon, and storms will spread eastward

toward Chesapeake Bay and the Atlantic coast through this evening.

The storm environment favors a mix of multicell clusters and line

segments capable of producing damaging winds.



The severe thunderstorm watch area is approximately along and 90

statute miles east and west of a line from 30 miles south southwest

of Richmond VA to 15 miles west northwest of Philadelphia PA. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Severe Thunderstorm Watch means conditions are

favorable for severe thunderstorms in and close to the watch area.

Persons in these areas should be on the lookout for threatening

weather conditions and listen for later statements and possible

warnings. Severe thunderstorms can and occasionally do produce

tornadoes.



&&



AVIATION...A few severe thunderstorms with hail surface and aloft to

0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

27030.



...Thompson

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