A minor aftershock early Sunday followed a small earthquake that rattled the Baltimore area less than two days earlier, according to the U.S. Geological Survey.
The Baltimore Sun reports that the aftershock had a magnitude of 1.7 with its epicenter near a shopping center in northeast Baltimore.
Friday afternoon's quake had a preliminary magnitude of 2.6 and was centered in Woodlawn, just west of Balltimore.
Neither caused any noteworthy damage or injuries. A 5.3 on the scale is considered a moderate earthquake, and a 6.3 is strong, according to the USGS website.
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Many reported feeling Friday's earthquake, but USGS geophysicist Don Blakeman said only people very close to the epicenter of Sunday's aftershock could have felt it.
“These little ones like this are just a very quick jolt,” he said.