This is really cool, yet quite terrifying… the video shows huge sheets of ice creeping up onto shores and smashing into the side of homes. The video takes place at Lake Mille Lacs in Onamia, Minnesota, and was shot by Darla Johnson. It’s known as an ice tsunami and is caused by strong winds blowing off the lake. It’s pretty crazy… it almost looks like fog rolling in.
According to meteorologist Todd Borek, “it basically has the same mechanism of an iceberg. Winds, but more so ocean currents, allow icebergs to drift. Same premise: A chunk of ice (relatively shallow) was pushed by a strong, sustained wind. The momentum of the ice sheet overcame the friction of the land.” (h/t Discovery)