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‘Frost Quakes’ Might Be Cause Of Mysterious Noises In Muskego

Phenomenon Happens When Moisture In Ground Suddenly Freezes And Expands

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Snow covered country road.
Pixabay

Meteorologists believe that mysterious sounds reported southeastern Wisconsin might have been caused by a rare natural phenomenon known as “frost quakes.”

They happen when moisture in the ground suddenly freezes and expands.

Muskego police on Sunday received reports of loud booming noises in the city but were unable to determine the source of the sounds. Police said there weren’t any reports of damage.

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Police said the noises also were heard in Waukesha, Big Bend, Wind Lake and Vernon.

National Weather Service meteorologist Chris Stumpf said that frost quakes are a reasonable explanation for the sounds.

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