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WWUS20 KWNS 011657
SEL1
SPC WW 011657
DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-WVZ000-CWZ000-020100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 481
NWS Storm Prediction Center Norman OK
1255 PM EDT Tue Jul 1 2025

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  District Of Columbia
  Delaware
  Maryland
  New Jersey
  South-Central and Southeast Pennsylvania
  Northern and Central Virginia
  Eastern West Virginia Panhandle
  Coastal Waters

* Effective this Tuesday afternoon and evening from 1255 PM until
  900 PM EDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Thunderstorm coverage is expected to increase across the
region over the next several hours ahead of a shortwave trough and
attendant cold front. The airmass across the region is moist and
unstable, with moderate to strong instability anticipated amid
continued daytime heating. Vertical shear is modest, with a
predominantly outflow-dominant storm mode anticipated. Given the
expected updraft strength and ample moisture, some strong
water-loaded downdrafts capable of producing wind damaging are
possible.

The severe thunderstorm watch area is approximately along and 110
statute miles east and west of a line from 40 miles south southeast
of Charlottesville VA to 40 miles northwest of Allentown PA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).

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 500. Mean storm motion vector
24020.

...Mosier