Tom Skilling's analysis of this afternoon's waterspouts and Friday's major cool down

–Waterspouts have dipped from 33,000 ft. tall super-cellular thunderstorms off the Kenosha and Waukegan shorelines. Sept is primetime for Great Lakes waterspouts because of the frequency with which cool air moves over warm lake waters-a set-up which de-stabilizes the atmosphere and encourages air to rise.


—Thursday’s waterspouts are forming as strong, sharply cooler NNE winds and much cooler air race southward over the warm waters of the Lake which are averaging 73-degrees.

–A huge temp drop’s on the way. Friday temps will be 30-deg cooler than Tuesday’s mid-90s and accompanied by strong NNE winds expected to produce huge waves and rip-currents on Lake Michigan.

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