I live near the mouth of the Potomac River where it enters Chesapeake Bay. I live in a concrete block cottage built in stages from 1962-1973! It shuddered and shook for 30 seconds but withstood any damage. Yet I clearly knew it was an earthquake at once.
Once I knew the epicenter was near the North Anna nuclear power plant reactors I was also happy to hear they successfully SCRAMMED. Because the cooling system needs to continue circulation they went on electric supply from their own emergency generators.
I soon learned that both FEMA and the Pentagon among other departments and agencies had evacuated their building and OPM approved dismissing employees early causing huge traffic jams. But what if the event was just a precusor? Why no execution of COOP plans?
Basically an F for the FEDS for this event as far as Preparedness and Response! IMO of course.