Could meteors cause it?
Heard it in Hammonton. Sounded kind of like distant artillary towards the south east. No tremor though.
Maybe, but wouldn't a meteor entering the atmosphere at an initial speed of 30,000+ mph leave a very pronounced vapor trail first before we hear the loud sonic boom, which is usually a "double bang" sound? Remember, when that meteor entered the atmosphere over Russia some years ago, people not only heard and felt the shockwave from the sonic boom of an object traveling several thousand miles per hour, but also saw the glowing meteor and the vapor trail behind it.