Image: Great Lakes surface weather analysis at 00 UTC on 12 April 1965

Description: Surface weather analysis depicting locations of fronts, tornadoes, and cyclones over the Great Lakes region late on April 11, 1965
Title: Great Lakes surface weather analysis at 00 UTC on 12 April 1965
Credit: National Weather Service
Author: National Oceanic and Atmospheric Administration
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Usage Terms: Public domain
License: Public domain
Attribution Required?: No