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Snap, crackle, pop? It's frosted quakes

Jan 31, 2019 - Chicago Tribune

Yes, you did actually hear that.

As temperatures plunged to Antarctic levels across the region Wednesday, social media lit up with reports of loud outdoor booms, cracks and bangs.

They're called ice quakes, or frost quakes. Or cryoseisms, if you want to get technical about it.

These peculiar events are occurring because the weather is causing the ground to explode. Sort of.

"Basically, it's so cold outside right now that you've got some moisture below the surface that's s...