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Global Warming Alert: Frost Warnings for upper Midwest - in August
Here's some news you probably hoped you wouldn't hear for another four months. The National Weather Service says areas of northeast Minnesota and northwest Wisconsin could see patchy frost this weekend. That's right, patchy frost in August.

The weather agency says clear skies could allow temperatures to dip into the low to mid-30s late tonight into early Monday.

Meteorologist Roman Berdes says an unusual cold-air mass from Canada will bring lower temperatures, but warmer air from the central Midwest should replace it by Monday. Berdes says these temperatures are uncommon but not unheard of. He says those areas saw temperatures in the 20s at this point in 2004.
Also this is a common occurrence during the run-up to mini ice ages.
Posted by: GolfBravoUSMC 2008-08-25
http://www.rantburg.com/poparticle.php?ID=248180