Amazing Fog in Chicago

Chicago has been seeing quite a bit of fog these past few weeks and some incredible images have been captured of the fog encompassing the city.

RT @nwsgrl: Incredible photo taken by our @cbschicago helicopter pilot of the fog over #chicago #boggeddowninfog pic.twitter.com/c1PBkc4NGK

— Tim Ballisty (@IrishEagle) June 27, 2014

What is the reason for this fog? Remember the icy Great Lakes that lasted into June because of the very cold winter? Well, even though the ice is gone the water temperature in Lake Michigan is still colder than usual. The coastline near Chicago is seeing water temperatures anywhere from 50°-70°.

When a hot, muggy air mass with dewpoints in the 60s move over Chicago and the cooler Lake Michigan, the temperature over the water is the same as the dewpoint and fog forms. This fog then rolls into areas of the city along the shoreline while areas a few miles inland don’t see any fog.

This goes to show that a cold winter can still have some effects on the weather even in late June.