GREAT LAKES ICE COVER WINTER 1968-69

Twenty-three ice charts were produced from data collected on eight reconnaissance flights made during the 1968-69 winter ice season. Ice formation was first reported on December 9, 1968. Areas reporting extended from Duluth, Minnesota, on western Lake Superior, to Barcelona, New York, on the south shore of Lake Erie. Winter temperatures generally varied from slightly above normal in the Lake Superior region to slightly below normal on Lake Erie. During the period of maximum ice cover, 40 percent of the surface of Lake Superior was covered. (Author)

• Corporate Authors:

  Lake Survey Center

  Detroit, MI  United States 
• Authors:
  • Rondy, D R
• Publication Date: 1971-10

Media Info

• Pagination: 50 p.

Subject/Index Terms

• TRT Terms: Ice; Lake ice; Nautical charts; Operations; Weather forecasting
• Candidate Terms: Ice forecasting
• Geographic Terms: Great Lakes
• Old TRIS Terms: Ice charts; Ice reporting
• Subject Areas: Administration and Management; Marine Transportation;

Filing Info

• Accession Number: 00034420
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NOAA-TM-NOS-LSCD-1 Tech Rpt
• Files: TRIS
• Created Date: Sep 29 1972 12:00AM