People are reporting they felt the ground shake Saturday morning in South Jersey.
The U.S. Geological Survey and the National Weather Service are not reporting an earthquake in the area. However, there is speculation it could be a sonic boom, according to the USGS.
Joint Base McGuire-Dix-Lakehurst spokesman Pascual Flores told NBC News on Saturday, "There currently is no training of any type that would have resulted in today's incident."
The New Jersey National Guard last weekend conducted artillery-fire training that it told the public about in advance.
New Jersey residents in Atlantic, Cape May, Ocean, Salem and Camden County are chattering about what they felt, what they heard and when it happened.
Reaction on NBC10's Facebook page:
"Had it happen here in brigantine sounded like thunder and everything shook not a cloud in the sky and every dog on the block went nuts didn't seem to effect the seagulls." -Kortney Jarvis McFarland
"I'm at Historic Cold Spring Village in Lower Twp., southern Cape May County. Heard what sounded like an explosion to the southeast just after 11 am. I was outdoors but my colleagues in our office said the building shook."- Jim Stephens
