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WWUS20 KWNS 240117

SEL5

SPC WW 240117

MDZ000-PAZ000-WVZ000-240400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 225

NWS Storm Prediction Center Norman OK

920 PM EDT Thu May 23 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Maryland

  Southern Pennsylvania

  Eastern West Virginia Panhandle



* Effective this Thursday night from 920 PM until Midnight EDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 65 mph possible

  A tornado or two possible



SUMMARY...A pair of discrete supercells may persist southeast across

southern Pennsylvania for the next couple hours, and spread into

parts of Maryland before weakening.



The severe thunderstorm watch area is approximately along and 50

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

Altoona PA to 40 miles east of Harrisburg PA. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU5).



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 220...WW 221...WW

222...WW 223...WW 224...



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

2 inches. Extreme turbulence and surface wind gusts to 55 knots. A

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

29040.



...Grams

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