The Chicago Tribune article “The Big Dig” of Wednesday 2 February included the sentence “Waves of up to 25 feet were predicted on Lake Michigan, which could cause flooding along Lake Shore Drive.”
On Wednesday 15 December 2010 in the daily 'Asl Tom Why' feature, a reader asked Tribune meteorologist Tom Skilling:
“What are the greatest wave heights recorded on Lake Michigan and other Great Lakes?”
Mr. Skilling's answer: “The highest waves measured on Lake Michigan have been just over 20 feet, occurring at the south end when storm-force north winds (55 mph and greater) blow down the entire 325 mile length of the lake.”
I've lived in Detroit, St Louis, Kansas City, Pittsburgh PA, Marblehead MA. Worked as tech rep in Southern CA, Bay area, NYC, I've been to Europe a dozen times (Ireland, UK, Scotland, Sweden, Finland, Belgium.
Favorite restaurants are Gene & Georgetti's in Chicago, Roma Cafe in Detroit, Frankie and Johnie's in NYC, Rigazzi's on the hill in St. Louis (Also Charlie Gitto's, was Angelo's when I went there.)
For about a year I had small offices in Clayton MO, in the Country Club Plaza in KC. I rode a ten-speed bike around Lake Michigan (The bottom half in one week in June 1978, another week for the top half in 1980, used the Badger both times.
Don't get to travel much anymore, but still try to rent a car and go around the Lake in March every year. Sure, there's still snow, and it's not warm, OTOH there are no bugs and no toursts. Greatest little tavern in the world is Sherry's Port Bar in Garden UP MI