A 6.2-magnitude earthquake struck Alaska on Thursday near Anchorage, but the U.S. Geological Survey said there was little likelihood of casualties or severe damage from shaking generated by the deeply rooted temblor.

The agency said the quake's epicenter was located 81 miles (130 km) northwest of Anchorage, Alaska's most populous city, and originated at a depth of 63.2 miles (101.7 km) below the surface, which would have lessened its impact.

"It was the earth rolling. It looked like I had double vision going on. Little bit of a vertigo," said Alaska State Troopers spokeswoman Megan Peters, adding there were no initial reports of injuries of damage.