

603 

WWUS20 KWNS 291601

SEL6

SPC WW 291601

NYZ000-OHZ000-PAZ000-LEZ000-LOZ000-292200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 76

NWS Storm Prediction Center Norman OK

1200 PM EDT Sun Mar 29 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western New York

  Extreme northeastern Ohio

  Northwestern Pennsylvania

  Lake Erie

  Lake Ontario



* Effective this Sunday afternoon and evening from NOON until 600

  PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Scattered large hail events to 1 inch in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms will develop early this afternoon from

northeastern OH into northwestern PA, and then spread quickly

northeastward into western NY.  The storm environment will favor

supercells capable of producing damaging winds/large hail, and

perhaps an isolated tornado.  The storms will move east of the more

favorable environment by late this afternoon/evening.



The severe thunderstorm watch area is approximately along and 55

statute miles east and west of a line from 25 miles northwest of

Rochester NY to 50 miles south of Franklin PA. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU6).



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 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 400. Mean storm motion vector

23050.



...Thompson

