Boom rocks Horry County, source unknown - WMBFNews.com, Myrtle Beach/Florence SC, Weather

Boom rocks Horry County, source unknown

HORRY COUNTY, SC (WMBF)- People in the northern end of Horry County were awakened with a start early Friday morning to what they say sounded like an explosion. People say the noise rattled windows and caused the ground to vibrate, but no one is quite sure what exactly caused the noise itself.

"I heard a loud boom," says Matthew Sarvis of Loris. "I didn't know what it was, but it startled me."

Reports came in to WMBF News that the effects of this mystery noise were felt in Loris, Longs, and Cherry Grove. Some reports indicate it was felt as far away as Carolina Beach. But when it comes to determining what caused the noise, even authorities are scratching their heads.

Law enforcement officials say they didn't receive any emergency calls regarding fires or explosions in the area Friday morning, and the United States Geological Survey lists no nearby earthquakes that could have caused the rumble. Officials at Shaw Air Force Base say it couldn't come from a military plane, since going supersonic over land is against regulations.

As for what it sounded like, each witness gives a little different description.

"I thought it was a delivery truck," says Sheri Whittington, who heard the noise outside her Cherry Grove home.

"My theory was someone's propane tank had exploded," says Danny Sarvis, who also heard the boom.

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