[palmer]

For DC you need to focus on a tsunami coming in from the ocean.

Won't happen. The only times DC floods is water coming downstream on the Potomac and occasionally with the right winds coming up from the bay. Most of the time the 180 degree turn in the lower Potomac blocks the surges. That bend in the river would definitely absorb any energy left from a tsunami.

[Vermont Lt]

The Tsunami we are talkin about would simply roll over that turn.

Don’t bring me down....we are dreaming here, remember.

[silverleaf]

Having watched live on camera what the tsunami did in Japan, traveling over the coastline and then up the rivers for 70 miles or more, I would not be too sanguine about Washington DC being immune from a big one that crosses the Atlantic, as from La Palma

a 5oo footer would go over the eastern shore and up the Chesapeake Bay, then up the Potomac

What’s the highest elevation between the Atlantic coast and DC?

If I was running away from a wave I wouldn’t stop in Washington DC!