<p>When I got up on Friday morning it was right around 0 degrees in Duluth with a brisk wind coming off the lake.  The lake water is still relatively warm because of the wimpy winter we've had in Minnesota.  The end result was a pretty scene with sea smoke rising off the water and swirly around the two lighthouses at the end of the piers.
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This is the South Breakwater Light.  It is a fixed green light.  The building attached originally housed the fog signal for Duluth.  The signal was a type F diaphone foghorn -- you know the type.  It makes the BEEEEEEEEEEEEEEEOOOOOOOOOOOOOOH sound.  The diaphone signal was removed a few years back and they now use an electric type that is mounted outside the lantern on the front side of the lighthouse.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9197427@N06">Pete Markham</a> from Loretto, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/pmarkham/6857248343/">A Cold Winter Morning in Duluth</a>