Well, living in the Pacific I recall a rolling quake that began with a large boom sound followed by a grinding soundIt lasted maybe 30 seconds, I think it was about 10-15 years agoSo a big boom boom boom makes sense to meThere are many prophetic warnings of a devastating quake happening hereGeologically we are very unstableThat is one reason I moved to the east side of the mountains, Puget sound is a trap waiting to happenNot to mention judgment for being in the lead against God's waysSo it is going to be a big one, just like the one that appears to be ready to happen to CaliforniaThanks for the confirmation