There were no immediate reports of damage or injuries, and Kim said it was unlikely that a quake of that magnitude would be a damaging event. Quakes of magnitude 2.5 to 3 are the smallest that can generally be felt by people.
Police say the quake triggered a flood of 911 calls, with residents reporting a sound like an explosion and houses shaking.
Kim said small earthquakes are not unusual in that area of New Jersey.
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