
Image caption
Map of satellite-based surface water temperatures across the Great Lakes. Temperatures span from 32 (dark purple) to 55 (yellow) degrees Fahrenheit. NOAA Climate.gov image based on data from NOAA's Great Lakes CoastWatch.
Map of satellite-based surface water temperatures across the Great Lakes. Temperatures span from 32 (dark purple) to 55 (yellow) degrees Fahrenheit. NOAA Climate.gov image based on data from NOAA's Great Lakes CoastWatch.