2026 Mid-Atlantic Severe Storm General Discussion

[yoda]

Watch up until 10pm

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.

[yoda]

50/20 wind probs, 40/20 hail probs, 20/<2 tor probs

[yoda]

 

[yoda]

There's a lot of reports down near Harrisonburg

[Kmlwx]

Watching that Frederick/Montgomery cell for me (in Colesville tonight). Might miss me to the north but it does seem to be having a tendency to come south. 

[Nomz]

Really strong storm just sprung up NW of Manassas

[Kmlwx]

Taking forever to come south and east

[AmericanWxFreak]

Incredible repetitive full sky lightning ahead of the hoco moco cell - beautiful.


.

[WxUSAF]

5 minutes ago, AmericanWxFreak said:

Incredible repetitive full sky lightning ahead of the hoco moco cell - beautiful.


.

Oh yeah it’s bright and loud 

[Kmlwx]

Maybe trying to cycle back up a bit - doubt it will get back to as intense as it was - but more lightning near Gaithersburg on the last update. 

[alexj7]

Best show of the year in Gaithersburg. We had 4 hits that were on top of us and it is still going. Two may have hit my property it was so bright and close.

Also saw green lightning. My 4yo even asked why it was so green.

[Kmlwx]

Maybe a downburst signature right around North Potomac or a hair NE of there? Probably sub-severe at least at this second but seems to be intensifying 

[Kmlwx]

[Kmlwx]

Plenty of lightning right on top of that signature as well. 

[AmericanWxFreak]

Whoever that was hoping for good lightning. By golly.

[Nomz]

DC weather dome strikes again

[WxUSAF]

28 minutes ago, AmericanWxFreak said:

Whoever that was hoping for good lightning. By golly.

This cell has been inching along, but this has been the most thunder and lightning of any storm this year I think 

eta…damn thing fell apart in the last 3 miles before reaching me