I recently received an email from my wife's sister, who was forwarded the remarkable images below by a friend living in Michigan. I'm of course wondering if this might be yet another unanticipated effect of global climate change?

Her friend made the following comment:

"Michigan has had the coldest winter in decades. Water expands to freeze, and at Macinaw City the water in Lake Huron below the surface ice was supercooled. It expanded to break through the surface ice and froze into this incredible wave. -- I've seen pictures of this wave phenomena in Antarctica, but in Michigan? Yes, it's been quite a winter..."