

569 

WWUS20 KWNS 221559

SEL3

SPC WW 221559

DCZ000-MDZ000-PAZ000-VAZ000-WVZ000-CWZ000-222300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 393

NWS Storm Prediction Center Norman OK

1200 PM EDT Wed Jul 22 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  District Of Columbia

  Western and Central Maryland

  South Central Pennsylvania

  Northern and Central Virginia

  Eastern Panhandle of West Virginia

  Coastal Waters



* Effective this Wednesday afternoon and evening from NOON until

  700 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph likely

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...Thunderstorms will intensify and over the mountains of

northern Virginia and southwest Pennsylvania and spread eastward

this afternoon and early evening.  Damaging winds and perhaps hail

are expected with the more intense storms today.



The severe thunderstorm watch area is approximately along and 85

statute miles east and west of a line from 20 miles south of

Charlottesville VA to 35 miles north northwest of Harrisburg PA. For

a complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU3).



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

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

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

27030.



...Hart

