BERKELEY COUNTY, SC (WCSC) - Reports of a second "sonic boom" in two weeks may be the result of training exercises at the Naval Weapons Station and not military aircraft.
Several viewers reported feeling a boom and shaking in parts of Berkeley County including Moncks Corner, Hanahan and Goose Creek at approximately 10:37 a.m.
Joint Base Charleston spokesman Marvin Krause said the Naval Weapons Station is conducting planned detonations as part of training exercises.
A few F-15 Eagles were in the air at around the same time, Krause said, but there is no evidence the aircraft, which were performing routine runway approaches and training would have reached the speed required to break the sound barrier, which would, in turn, create a sonic boom.
Typically, it is rare that jets would break the sound barrier over populated areas, he said.
The Earthquake Center at the College of Charleston tracks seismic activity in the area.
Dr. Steve Jaume, an associate professor of geography at the college, confirmed there was no earthquake detected in the area.
The Naval Weapons Station is also conducting a prescribed fire that is expected to last until about 7 p.m., but this is not related to the training, Krause said.
The detonations were scheduled to continue through 2 p.m., he said.