Ice coverage on Lake Superior has reached a seasonal peak. The image above shows VIIRS true-color imagery from Suomi-NPP (taken from the VIIRS Today website). Mostly clear skies over most of Superior on 14 March allowed for better estimates of ice cover on that day from VIIRS (more clouds were present on... Read More

A colder-than-normal February over the western Great Lakes (through the 27th, Duluth is 10o F below normal; Marquette is 5o F below normal; Green Day is 2o F below normal; Cleveland is 1o F below normal) has fostered a growth in ice cover over the Lakes (This figure, from here, for... Read More

GOES-16 Cryosphere products — Ice Mask, Ice Concentration and Ice Surface Temperature — have been developed and are in a testing phase. The AWIPS screenshot above shows ice concentrations over parts of Lakes Superior, Huron and Erie. These products are created over the Full Disk ABI domain in regions of... Read More

GOES-16 True-Color imagery from CSPP Geosphere (direct link to animation), above, shows high clouds over Lake Erie moving eastward as lake ice moves to the north. It is an unusual day that allows a (relatively) unobstructed view of the lake surface. Clouds are often present. Note that southern Lake Huron also seems ice-covered; western... Read More