CHICAGO (CBS)– Chicagoans have been startled by loud booms and cracking sounds, and they’re not sure where the noise is coming from.
One possibility is a phenomenon called “frost-quake,” which happens in cold weather.READ MORE: Man With 13-Year-Old Adam Toledo When He Was Fatally Shot By Police Facing Felony Gun Charges
A contractor spoke with CBS 2 and said this happens a lot. He said when the ground gets saturated with water and ice, it can expand and crack. this makes a loud booming sound.READ MORE: At Least 10 People Shot, 1 Killed In Gun Violence In Chicago This Weekend
Chicago’s Building Department said those loud sounds also can be made by metal or wood in your home, expanding and contracting, because of the cold.
The noise could be caused by house frames, rooftop, floorboards and even air pockets inside your house.MORE NEWS: 17-Year-Old Killed, Two Others Injured In Wentworth Gardens Shooting
It appears to be a natural occurrence during cold weather.