Did you feel it? Mysterious 'boom' rattles San Diegans

SAN DIEGO (KGTV) - A number of San Diego residents have reported to 10News that they felt a "boom" Thursday morning.

Some San Diegans said the unexplained sound/movement occurred just before 11 a.m.

The U.S. Geological Survey did not report an earthquake in the immediate area. A 2.8-magnitude quake was reported at the Northern California-Nevada border at around the same time, the USGS website indicated.

Sherman Simbulan, who lives in the Webster area, felt it while working on a car outside.

"It was pretty strange. First I heard what sounded like a low, distant boom, and then I felt the rumble. And it was very, I would say gradual, as it came to me," said Simbulan. "Instantly thought earthquake, but froze for a second, looked around, nothing is shaking, nothing swaying, my cup did not fall over."

Others felt it in Chula Vista, Encanto, Coronado, La Mesa, Valencia Park, El Cajon, Lakeside, Lemon Grove and National City.

10News reached out to Camp Pendleton, MCAS Miramar and the Navy. Each say no exercises conducted on Monday were the cause of the boom.

10News is working to find out more about the tremor and will update this story when more information becomes available.

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