"The temperature near Duluth Harbor hit -18 degrees on Sunday morning, according to a report, and the coldest point was the town of Embarrass at -38 degrees. The temperature of the water in Lake Superior, though, was far above the air temperature, creating this impressive wall of sea smoke."
"The fog is created when there’s an inverse in temperatures, with the air being colder than the water."
The sea smoke in the harbor was captured in this video.
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