A rare weather phenomenon, called "frost quakes," was a likely culprit for loud popping sounds heard in Franklin County and ...

Frost quakes — loud booms from underground during freezing temperatures — might be alarming to hear, but meteorologists say ...

Rare frost quakes, also known as cryoseisms or ice quakes, were reported throughout the St. Louis region on Monday.

Meteorologist Lea Hill, on X on Monday: "Frost quakes! They're caused by rapidly freezing temperatures & expanding ice. They are shallow, don't release much energy, and are not associated with fault ...