An earthquake with a preliminary magnitude of 6.4 rattled a remote region of Alaska's North Slope southeast of Prudhoe Bay Sunday morning.

It's an unusual location for an earthquake in Alaska, especially one of that size. The quake was centered in the Arctic National Wildlife Refuge about 52 miles southwest of Kaktovik, 85 miles southeast of Deadhorse and Prudhoe Bay and 104 miles north of Arctic Village according to the Alaska Earthquake Center.

Unusually large North Slope earthquake at 6:58am, near the Beaufort Sea coast. Right now we have the magnitude at 6.4. Location is very remote, so there are no known or expected human impacts. We'll share info as we put it together.— AK Earthquake Center (@AKearthquake) August 12, 2018

It hit at 6:58 a.m. and occurred at a depth of about six miles, the center said. A number of smaller shakes were reported in the area later Sunday. The location is just north of the Sadlerochit Mountains, according to the earthquake center.

Kaktovik, on the Beaufort Sea coast, is the nearest community. There were no reports of any damage. But the quake was widely felt, in Kaktovik and by workers at the oil-production facilities in and around Prudhoe Bay.