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WWUS20 KWNS 151939

SEL3

SPC WW 151939

CTZ000-MAZ000-NJZ000-NYZ000-PAZ000-160200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 503

NWS Storm Prediction Center Norman OK

340 PM EDT Wed Sep 15 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Connecticut

  Western and central Massachusetts

  Extreme northern New Jersey

  A small part of southeast New York

  East central Pennsylvania



* Effective this Wednesday afternoon and evening from 340 PM

  until 1000 PM EDT.



* Primary threats include...

  Isolated damaging wind gusts to 60 mph possible

  Isolated large hail events to 1 inch in diameter possible



SUMMARY...Thunderstorms along and ahead of a cold front will

continue to spread eastward through late evening.  The strongest

storms will be capable of producing occasional damaging outflow

gusts near 60 mph and isolated large hail near 1 inch diameter,

prior to the storms weakening early tonight.



The severe thunderstorm watch area is approximately along and 30

statute miles north and south of a line from 35 miles east of Keene

NH to 35 miles west southwest of Allentown PA. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU3).



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 501...WW 502...



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

1 inch. Extreme turbulence and surface wind gusts to 50 knots. A few

cumulonimbi with maximum tops to 500. Mean storm motion vector

25030.



...Thompson

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