NEW : There are more than a dozen aftershocks from the main quake . NEW : Notes : The U.S. Geological Survey noted that the biggest tremor struck at 9:51 a.m. local time ( 1:51 p.m . ET ) , centered some 80 miles northwest of Anchorage . The earthquake was abnormally deep , felt over a large area . NEW : Pictures show broken shelves , cracked walls , torn ceiling panels . The 64-mile deep earthquake was centered 20 miles northwest of Anchorage .
NEW : There are more than a dozen aftershocks from the main quake . NEW : Notes : The earthquake was abnormally deep , felt over a large area . NEW : Pictures show broken shelves , cracked walls , torn ceiling panels . The 64-mile deep earthquake was centered 20 miles northwest of Anchorage .