Darke county residents hear loud explosions

DARKE COUNTY, Ohio - The Darke County Emergency Management Agency says it has discovered what prompted people to flood the agency with calls this morning.

The EMA said it has investigated reports from Central Indiana to Western Ohio about the sounds. They said they have worked with several agencies and departments and have determined that the loud sounds were caused by a phenomenon called Cryoseism, also known as Frost Quakes.

The loud cracks and booms are caused by rapid differential expansion of warm buildings on the inside and very cold air on the outside.

WHIOTV.com contributed to this article.

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