select navigate esc close

SPC Severe Thunderstorm Watch 457

SPC Forecast Products·

WW 0457 Image


URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 457
NWS Storm Prediction Center Norman OK
215 PM EDT Sat Jul 4 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  District Of Columbia
  Maryland
  Virginia
  Eastern West Virginia
  Coastal Waters

* Effective this Saturday afternoon and evening from 215 PM until
  1000 PM EDT.

* Primary threats include...
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...Numerous thunderstorms will develop and spread across the
watch area through the afternoon and early evening, in and hot and
humid air mass.  Damaging wind gusts are likely with the strongest
storm clusters.

The severe thunderstorm watch area is approximately along and 110
statute miles east and west of a line from 35 miles northeast of
Martinsburg WV to 55 miles south southeast of Roanoke VA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).

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 454...WW 455...WW 456...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
25030.

...Hart

Read more