The temblor struck a little more than 3 miles north of Scissors Crossing, which is about 20 miles from San Diego County Estates, according to the U.S. Geological Survey. It struck at 2:32 a.m. and was about 6 miles deep.
The earthquake comes hours after a 3.8 struck in the same area just shortly before 8 p.m. That quake followed a 3.0 aftershock from a 4.0-magnitude earthquake that hit Julian, California, Wednesday afternoon.
All four of these earthquakes registered on ABC7's Quake Cam. There was no immediate word of any injuries or damage from these quakes.