Scientists confirmed a rare natural phenomenon known as a frost quake happened in Missouri on Superbowl Sunday.
The quake happened near the Hannibal area and could be felt and heard as far away as Mexico.
A frost quake happens when moisture in the ground suddenly freezes and expands.
Mizzou Atmospheric Scientist Tony Lupo said he??s never experienced a frost quake in Missouri during his past 17 years at the University.
Lupo said, ??They typically happen in the mid-latitudes and further north where you get cold air outbreaks, especially rapid cold air outbreaks, like we??ve had.??
Hannibal police got dozens of calls about the frost quake.
Missouri residents flooded Facebook with concerns.