MISSOURI, USA — Loud booms recently heard ... A rare weather phenomenon, called "frost quakes," was a likely culprit for loud popping sounds heard in Franklin County and surrounding areas ...

Several outlets reported on the loud bangs heard across Missouri this week, attributing them to frost quakes, formally known as cryoseism, linking them to the bitterly cold weather sweeping the ...

Loud noises were heard amid the cold snap across the middle of Missouri as well as in the ... KSDK that it received multiple reports of frost quakes but that the phenomenon is not actively tracked.