Seiche on Lake MichiganSeptember 4th, 2014 at 9:28 pm by Bill Steffen under Bill's Blog, Weather
A rare seiche occurred on Lake Michigan this morning. The strong, thunderstorm induced S-SW wind blew surface water toward the Michigan side of the lake, causing the water level to rise. The picture shows a significant rise in the water level of Lake Michigan at the Petoskey Marina, where the water rose over the docks! At the same time the water level fell in Wisconsin. As the winds die down the water sloshes back toward Wisconsin and can rise and fall several times before leveling off. There were a number of fatalities in Chicago due to a seiche in 1954. Seven people lost their lives in a seiche here in SW Michigan on July 4, 2003. Strong low pressure centers can create a “standing seiche”. Here’s an example of that from Oct. 2010.