

593 

WWUS20 KWNS 301756

SEL7

SPC WW 301756

DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-WVZ000-CWZ000-310100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 297

NWS Storm Prediction Center Norman OK

200 PM EDT Thu May 30 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  District Of Columbia

  Delaware

  Maryland

  New Jersey

  Southeast Pennsylvania

  Northern Virginia

  Eastern West Virginia Panhandle

  Coastal Waters



* Effective this Thursday afternoon and evening from 200 PM until

  900 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 65 mph likely

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Initially discrete cells should consolidate into a

fast-moving cluster. Damaging winds are the primary hazard. A

tornado or two is possible, mainly across the Delaware Valley.



The severe thunderstorm watch area is approximately along and 75

statute miles north and south of a line from 10 miles west southwest

of Martinsburg WV to 25 miles east of Philadelphia PA. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU7).



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 55 knots. A

few cumulonimbi with maximum tops to 450. Mean storm motion vector

26040.



...Grams

