WWUS20 KWNS 271914

SEL2  

SPC WW 271914

DCZ000-MDZ000-PAZ000-VAZ000-WVZ000-CWZ000-280200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 632

NWS Storm Prediction Center Norman OK

315 PM EDT Thu Aug 27 2026



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of 

  District Of Columbia

  Central Maryland

  Central Pennsylvania

  Northern Virginia

  Eastern Panhandle of West Virginia

  Coastal Waters



* Effective this Thursday afternoon and evening from 315 PM until

  1000 PM 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...Thunderstorm coverage and intensity is expected to

increase across the region this afternoon as a shortwave trough and

attendant cold front approach from the west. Warm and moist

conditions have fostered strong buoyancy across the region while

increasing mid-level flow contributes to strengthening deep-layer

vertical shear. These environmental conditions support the potential

for strong to severe thunderstorms, with damaging wind gusts and

isolated large hail as the primary risks. A low-probability risk for

a brief tornado or two exists as well.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 20 miles north northeast

of Williamsport PA to 55 miles southwest of Washington DC. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU2).



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 630...WW 631...



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

27020.



...Mosier