The PDS Blue Box in the midwest is insane. 2012 Derecho on steroids. For @yoda yea that's the only thing I can think of...storms bubbling up along the edge of a high...IIRC the 2012 Derecho was an impulse riding the edge of a pretty big high pressure system and since it wasn't an airmass change it kept temps from cooling off post event.
That cluster of tornado warned storms might make a run at far southern Maryland tonight. Even if they lose their tornadic potential, they would probably bring some gully washers.
HRRR throws a decent number of discrete cells and even a few UHI tracks near RIC this afternoon. Couple of beefy looking line segments event up through the NW suburbs of DC.
Woodbine doesn't flood too much. Sams Creek Rd @ Oak Orchard Rd towards New Windsor is more of an issue. Skyesville has issues in the historic district.
Not really sure where else to post this question, but has anyone else noticed that we've been getting these late season -NAOs more often? Seems almost like clockwork we get a blocking pattern late March into mid April then we're right into summer.