[Scan-DC] 9:54PM EST in suburban MD, Sonic boom or thunder?

[b_thom at juno.com]

On Tue, 24 Jan 2006 22:29:26 -0500 "Rick Hansen" <RickHansen at vneb.com>
writes:
> At about 21:54 there were two long booms near Beltsville, MD. They 
> lasted
> far longer than thunder usually does, and they showed up about 5 
> minutes
> before the rain.

Alexandria too. Didn't catch the exact time, but it was raining soon
after.