Sudden shocking waves are not unknown in the Great Lakes, although nothing remotely like the Indian Ocean tsunami has happened here:
CADILLAC - People in the Great Lakes states should be aware of a phenomenon that occurs every year.
A tsunami, like the one that has resulted in the death of more than 117,000 people in Southeast Asia, would be very unlikely in Michigan but a seiche is not.
A seiche, pronounced SAY-shh, is the sloshing of water back and forth in a lake. It is usually caused by abrupt wind speed change like the ones associated with thunderstorms, according to Meteorologist Jim Keysor at National Weather Service in Gaylord.
http://www.cadillacnews.com/articles/2005/01/03/news/news06.txt
Posted by Dave at January 3, 2005 09:45 AM