NEW YORK, Aug. 30 (Xinhua) -- An earthquake measuring 7.0 on the Richter scale jolted Adak, Alaska, the U.S. Geological Survey said on Friday. No damage or injuries were reported.
The temblor occurred at 8:25 a.m. local time (1625 GMT) Friday with a depth of 34.52 km. The epicenter was initially determined to be at 51.7112 degrees north latitude and 175.3661 degrees west longitude, the USGS reported.
The USGS initially put the intensity of the quake at a lower magnitude of 6.8 and at a shallower depth of 33 km.
The temblor was felt strongly in Adak and Atka, and shaking lasted up to one minute, the Alaska Earthquake Information Center said in a statement.
There have been no immediate reports of damage. No tsunami warning has been issued so far.