Popping and booming, what causes it?

Lots of people have been hearing cracks and booms.

Storm Team 10’s Kevin Orpurt shares his thoughts on what he thinks may be causing them.

The ground has frozen to a depth of about 18 inches, and since the ground is frozen so deeply, water in the ground freezes and then expands with force.

That is what creates a popping sound.

Kevin recently talked with a guy whose grandpa told him that the sap in trees can also freeze.

That can create a snapping or cracking noise.

If you’ve been hearing the noises, chances are, it’s because the weather has been so cold.

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