A Look at the Ice Cover on Lake Superior and Northern Lake Michigan
Clear skies on Wednesday, February 16 allowed for a good look at how ice cover is progressing this winter on the Upper Great Lakes. The top satellite image is a false color image. Clouds appear white, open water appears black and ice cover appears as an aqua color. The second image is a traditional visible satellite image with no color enhancement. The third image is from the NOAA Great Lakes Ice Atlas, and it shows the median ice cover on the Great Lakes for the week of February 15th through the 22nd, based on data from the winters of 1973 to 2002. Typically, ice cover on Lake Superior reaches its peak at the end of February and early March. Click on each image to view a high resolution satellite photo (images are large -- around 1mb).