Table 1. Eighteen United States National Weather Service stations used for FDD 
calculations by lake

Lake Superior
  *Duluth, MN
  *Sault Ste Marie, MI
   Houghton, MI
  *Marquette, MI
 

Lake Michigan
  *Green Bay, WI
  *Milwaukee, WI
  *Chicago, IL
   Traverse City
  *Muskegon MI


Lake Huron
  *Alpena, MI
   Port Huron, MI

Lakes St. Clair ­Erie
  *Detroit, MI
  *Toledo, OH
  *Cleveland, OH
   Erie, PA
  *Buffalo, NY

Lake Ontario
   Rochester, NY
   Oswego, NY

*Daily FDD data obtained from NWS FO Cleveland, Ohio for most of the winters of the 
update period.