

206 

WWUS20 KWNS 090026

SEL2

SPC WW 090026

DCZ000-MDZ000-PAZ000-VAZ000-WVZ000-CWZ000-090400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 492

NWS Storm Prediction Center Norman OK

830 PM EDT Wed Sep 8 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  District Of Columbia

  Maryland

  Southeast Pennsylvania

  Far northern Virginia

  Eastern West Virginia Panhandle

  Coastal Waters



* Effective this Wednesday night from 830 PM until Midnight EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Initial cluster developing across south-central

Pennsylvania should spread east, while additional storms may form

south into northern Virginia this evening. Damaging winds and a

brief tornado are the primary threats.



The severe thunderstorm watch area is approximately along and 45

statute miles north and south of a line from 45 miles northeast of

Baltimore MD to 30 miles south southwest of Hagerstown MD. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU2).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 491...



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 450. Mean storm motion vector

27025.



...Grams

