Mysterious booms being reported across the Midstate - WSMV News 4

Mysterious booms being reported across the Midstate

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NASHVILLE, TN (WSMV) -

If you've heard a mysterious loud boom in the Midstate this week, you're not alone.

The National Weather Service said this is a weather phenomenon called a cryoseismic boom, which happens when frozen water expands quickly in the ground.

Middle Tennessee has had the perfect storm, so to speak, to create these conditions.

All of the snow and ice the area has seen the past couple of days melts during the day.

"A lot of people call them frost quakes or ice quakes," Channel 4 Chief Meteorologist Lisa Spencer said. "What happens is that you have all this ice that's formed, the moisture soaks into the ground, it freezes. And then when it freezes, it expands. That's that cracking noise when the ice is expanding."

Wednesday, Gregory Salazar of Smith County posted on Channel 4's Facebook page after hearing one of the so-called frost quakes.

"It sounded literally like the foundation had cracked," Salazar said. "I mean, literally, it felt like a giant oak tree falling on my roof."

Though they are fairly common in other parts of the country, people in Middle Tennessee ran for cover, while some ran outside to see what was going on.

Channel 4 has received reports from Spring Hill, Columbia, Brentwood and other places all over the Midstate this week.

Officials at the National Weather Service said this activity is completely harmless.

Have you heard any loud booms this week? Comment on the Channel 4 Facebook page.

Copyright 2015 WSMV (Meredith Corporation). All rights reserved.

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