SPC Severe Thunderstorm Watch 638

SPC Severe Thunderstorm Watch 638

WW 638 SEVERE TSTM CT NJ NY PA CW 122210Z – 130400Z

Severe Thunderstorm Watch Number 638
NWS Storm Prediction Center Norman OK
610 PM EDT Sat Aug 12 2023

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Western Connecticut
Northern New Jersey
Southeast New York
East central Pennsylvania
Coastal Waters

* Effective this Saturday night from 610 PM until Midnight EDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
A tornado or two possible

SUMMARY…Scattered thunderstorms will persist through the evening,
some of which will be supercells capable of producing occasional
large hail and wind damage. Additional storms will spread into the
area late this evening and early tonight, with a continued severe
threat. An isolated tornado or two could also occur with favorable
storm interactions.

The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 55 miles north of
Poughkeepsie NY to 35 miles west southwest of Newark NJ. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU8).


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


635…WW 636…WW 637…

AVIATION…A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector


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