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WWUS20 KWNS 301637

SEL9

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NYZ000-PAZ000-310000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 299

NWS Storm Prediction Center Norman OK

1240 PM EDT Tue May 30 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Western New York

  Central and Western Pennsylvania



* Effective this Tuesday afternoon and evening from 1240 PM until

  800 PM EDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Scattered thunderstorms will continue to develop across

the watch area this afternoon and early evening, posing a risk of

hail and damaging winds in the strongest cells.



The severe thunderstorm watch area is approximately along and 75

statute miles east and west of a line from 45 miles south southwest

of Altoona PA to 55 miles north of Syracuse NY. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU9).



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

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

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

25030.



...Hart

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