Visible satellite image of ice cover December 25, 2000

After a really cold December it didn't take long for relatively shallow (by Great Lakes standards) Lake Erie to develop significant ice cover.  You can see the ice cover over roughly the western third of the lake. The striated white areas are clouds that have formed as a result of cold air crossing the warm lakes.  Lake Ontario has no ice cover at this point, because it is so deep and takes much longer to "chill out".  Point temperature observations at water intake sites on Lakes Erie and Ontario from this day indicated the Lake Erie temperature was 33F and Lake Ontario was 37F.