So the ice had cleared off of the lake a few days ago. Yesterday, however, was a remarkably windy (25-30kt) day, with the wind blowing directly down the western arm of the lake towards Duluth/Superior. Around 2:00, I noticed from our house giant sheets of ice WAY out on the lake, towards MI/WI. A few hours later, these giant sheets moved into the tip of the western arm, where as far as I know they remain (it's a very cloudy day). It was very impressive to see these giant sheets of ice move down the lake.