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WULF News

Frost quakes are harmless, but startling, products of winter weather

todayJanuary 29, 2026 6

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As the area continues to see freezing temperatures, you might occasionally hear a loud boom outside.

“We’ve had reports from across south-central Kentucky, especially, of these loud booms that folks have heard, and those are frost quakes, or cryoseism,” said Meteorologist Evan Webb with the National Weather Service in Louisville. 

The weekend winter storm brought high amounts of precipitation that saturated the ground quickly.

“That freezing rain saturated the ground with soils somewhat above freezing still, but then all that moisture in the soil was able to freeze and expand,” Webb said. “Of course, water expands when it freezes into ice, and it expands and cracks, and so that’s that sound that you’re hearing is the freezing of all that moisture in the soil.”

While startling, frost quakes are no cause for alarm,

“They’re generally harmless,” Webb said. “Really, the bigger safety concern is just from the cold itself.”

While the NWS has lifted advisories related to the temperature, very cold temperatures are expected for the rest of the week.

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Written by: 94.3 The Wolf

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