PITTSBURGH (KDKA) – Was there a frost quake in Pittsburgh over the weekend?

The Weather Channel shared a video recorded in the Pittsburgh area where you can hear what sounds like a large pop and rumble.

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They say that’s the sound of an “frost quake.”

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According to the Weather Channel, a frost quake happens when temperatures rapidly drop to near or below freezing. This causes water to freeze, expanding into ice and putting stress into soil or bedrock until it cracks.

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Sometimes a large “boom” and shaking follows. The Weather Channel says there’s usually no damage.