Wednesday, November 11, 2020

What Period Of Time Had The Most Lake Erie Ice Cover?

Lake Erie ice coverage - Photo Courtesy: Scott Sabol, January 2011

High Resolution Satellite - March 8,2019

It took a while but I finally finished plotting the daily Lake Erie ice coverage for each season since 1972. I separated this into month periods starting with November and ending with May.  This is all color coded. 
  • Light blue blocks indicates ice coverage under 1%
  • Bright blue is 2% to 10%
  • Dark Blue is 11% to 25%
  • Purple is 26% to 50%
  • Pink is 51% to 74%
  • White indicates at least 75% coverage

You'll notice several things here:
  1. Significant ice typically doesn't develop until late December.
  2. Mid/late 1970s AND the early 2000s stand out as the most significant ice coverage period in  January and early Februar
  3. First half of February is typically the peak for ice coverage
  4. November 23, 2014 was the earliest ice cover
  5. May 17, 1982 was the latest ice cover 








The entire graphic assembled through winter of 2018-19