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606 

WWUS20 KWNS 022240

SEL4

SPC WW 022240

DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-CWZ000-030400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 484

NWS Storm Prediction Center Norman OK

645 PM EDT Wed Sep 2 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  District Of Columbia

  Delaware

  Central and Eastern Maryland

  Southern New Jersey

  Southeast Pennsylvania

  Northern Virginia

  Coastal Waters



* Effective this Wednesday night from 645 PM until Midnight EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Thunderstorms have intensified over northern Virginia and

central Maryland.  This activity will track eastward across the

watch area through the evening hours, posing a risk of locally

damaging wind gusts.  A tornado cannot be ruled out.



The severe thunderstorm watch area is approximately along and 65

statute miles east and west of a line from 40 miles southeast of

Washington DC to 50 miles east northeast of Harrisburg PA. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU4).



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

1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 500. Mean storm motion vector

24030.



...Hart

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