In Maine we still have minor earthquakes resulting from the release of overburden pressure from them old glaciers which melted away some thousands of years ago. Every year or so we shift up a little higher in elevation. Sometimes it feels like a freight train is passing, which is mighty strange if you happen to be out on the water!

Of course the weight of melting glaciers has been somewhat comphensated for by the increased weight of incoming retirees with their Volvas and RV's.

Good luck on the west coast!

Cheerily,
Charley Noble