Great Lakes Ice Charts
 Parameters
- ICE EXTENT
- LAKE ICE
- RIVER ICE
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Documentation Access Data
Charts show ice extent and concentration three times weekly during the
ice season, for all lakes except Ontario, from the 1973/74 ice season
to the present. Most charts are annotated to indicate data sources.
Straits of Mackinac, Green Bay and Sault Ste. Marie are enlarged as
insets, and in some cases, provided as separate charts. The data set
is updated annually, usually in August or September. From 1973/74
through 1986/87 charts were prepared by the National Weather Service
Forecast Office, Ann Arbor, Michigan. Beginning with the 1987/88
season, the National Ice Center (formerly known as Navy/NOAA Joint Ice
Center) in Suitland, Maryland has prepared the charts. Charts are available as GIF files via ftp. Charts for 1973/74 through 1994/95 are also available on microfiche or as photocopies. Photocopies available upon
special request from NSIDC User Services
Data CitationNational Snow and Ice Data Center, compiler. 1995. Great Lakes ice charts.
Boulder, CO: National Snow and Ice Data Center. Digital media.
See Also
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