Some experience 'frostquake' Tuesday night

Posted at 9:46 PM, Jan 12, 2016

Did you hear a loud boom outside Tuesday night? It might have been a "frostquake," according to the National Weather Service's Milwaukee/Sullivan office.

The NWS explained the phenomenon in a Facebook post:

We have received reports of a loud boom and even some rumbling near the Columbus/Fox Lake area, down to the Johnson...

Posted by US National Weather Service Milwaukee/Sullivan Wisconsin on Tuesday, January 12, 2016

Dozens of people confirmed the frostquake in the comments, including one man who described it as "like a steam roller vibrating on fresh asphalt."

Cryoseisms, as they're officially known, happen largely in the Midwestern, Northern, and Northeastern United States, but also in Canada.


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