A little after 4 p.m. on Monday, a boom shook parts of the Charleston, South Carolina area, and people started to call officials to report a possible earthquake, according to the National Weather Service.
“The NWS in Charleston has received a number of inquires of a possible earthquake felt around parts of the Charleston Metro Area about 15-20 min ago. As of yet, we have not received any confirmation from the @USGS. We are monitoring this situation closely,” the National Weather Service tweeted.
The Weather Service and South Carolina emergency management officials said they had no reports of seismic activity. But a researcher from the College of Charleston’s South Carolina Earthquake Education and Preparedness Program looked at the data and said the shaking was from a sonic boom, according to WCSC.
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There was “heavy military aircraft activity over Charleston Sunday and Monday,” WCIV reports.
People tweeted to the National Weather Service in Charleston about what they felt. “I was wondering if I was the only one. Obviously not. Heard a loud rumble and then the room on the second floor of my house rattled for about 2-3 seconds,” one said.
“Heard a loud rumble that lasted a few seconds near Rivertowne in North Mount Pleasant. Feel confident that it was a sonic boom rather than an earthquake,” another person tweeted.