Strange "Lake Effect" Phenomena

Visiting Lake Superior, I experienced a dangerous lake effect phenomena that I had never heard of before. Has anyone ever heard of this? We spent Friday in Duluth, MN where it was only 60 to 70 degrees all day. Everywhere else it was 90+ and high humidity. When we left for home the temp had fallen further as a thunderstorm was moving in. We were on the interstate surrounded by Friday, 65mph+ traffic when everyone in front of us started hitting their brakes for no apparent reason. In the next instant we found out why as ALL of our windows turned white and impossible to see out. The only thing I could see was VERY faint brake lights VERY close ! I instinctively fumbled for the wiper controls while trying to stay on the road and avoid a crash. In the span of 5 seconds it was over. My view improved and we were on our way with a group of very cautious drivers. When we opened the side windows to clear them I instantly realized what had happened as the outside air had gone from 60 to 90+ in the space of a few feet. The hot, humid air had condensed on the cold vehicles, leaving a very thick layer of moisture. We have driven this same road at least 30 times and nothing similiar to this has ever happened. Is this rare? Or do the residents have to put up with this all the time?

Greg Meier,"The Original Blue Hills Beast"
Jack of Many Trades, Master of None
http://members.aol.com/gregmeier/private/3ONLINE.html

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