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It might be cold enough in Chicago right now to make the ground shake.
Local news station WGN reported today (Jan. 30) that its viewers had heard "frost quakes" in the city overnight. And though the reports in Chicago are still unconfirmed, frost quakes are indeed a real thing.
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Charles Mott, a meteorologist at the National Weather Service (NWS) office serving Chicago, told Live Science he hasn't personally heard any frost quakes in recent days, but added "that has to do with being inside all day."
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But Mott said that there's been some chatter about the possibility of them around the office, and that he has no reason to doubt WGN's report.
For a frost quake to occur, at least three conditions are required, according to "Frost Quakes: Forecasting the Unanticipated Clatter," published online in 2015 in the meteorology journal Weatherwise. First, rain or snowmelt saturates the ground with water. Second, there's little to no snow on the ground, which otherwise...
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