2026 Mid-Atlantic Severe Storm General Discussion

[yoda]

URGENT - IMMEDIATE BROADCAST REQUESTED
   Severe Thunderstorm Watch Number 335
   NWS Storm Prediction Center Norman OK
   415 PM EDT Sun Jun 14 2026

   The NWS Storm Prediction Center has issued a

   * Severe Thunderstorm Watch for portions of 
     District Of Columbia
     Western and Central Maryland
     Central and Northern Virginia
     Eastern Panhandle of West Virginia
     Coastal Waters

   * Effective this Sunday afternoon and evening from 415 PM until
     1100 PM EDT.

   * Primary threats include...
     Scattered damaging wind gusts to 70 mph likely
     Isolated large hail events to 1.5 inches in diameter possible

   SUMMARY...Thunderstorm coverage is expected to increase this
   afternoon and evening within the warm, moist, and unstable
   environment in place across the region. Recent 18Z sounding at IAD
   sampled 42 kt of 0-6 km shear, which is more than sufficient for
   updraft organization. General expectation is for multiple rounds of
   occasionally severe storms, with damaging gusts as the primary
   severe hazard. Isolated instances of large hail could occur as well.

   The severe thunderstorm watch area is approximately along and 70
   statute miles east and west of a line from 25 miles northeast of
   Martinsburg WV to 40 miles southeast of Lynchburg VA. For a complete
   depiction of the watch see the associated watch outline update
   (WOUS64 KWNS WOU5).

 

[Kmlwx]

Well per the TBWI radar, the bay breeze has made it west of me here in Odenton and it continues to push west a bit. So if that will be the dividing line/focal point for severe storms vs more garden variety stuff - then a good chunk of the area will be east of that. 

[Eskimo Joe]

33 minutes ago, WxUSAF said:

2550 j/kg surface based cape on the 18z iad sounding. Seems good

Wow 

 

[yoda]

Per LWX, on the 12z KIAD sounding, PWAT was 1.05.  On the 18z, it was 1.52

[Eskimo Joe]

Hahaha Yinzer Alley go brrrrr

[Mrs.J]

So usually I have seen SKYWARN spotters activated at the bottom of the watch itself. This time they put up a special statement. Is that a new way they are doing it? Also I have the Baltimore/Washington number. Is it the same one for Sterling?