Summary:
A tsunami watch has been lifted in Alaska after a strong earthquake struck off the coast of the state.

Full article:
(CNN) -- An initial tsunami advisory has been canceled for coastal Alaska. One had been issued after a magnitude 7.9 earthquake struck Monday about 15 miles from Little Sitkin Island, Alaska. The quake had a depth of 71 miles, according to seismologists. The town of Adak evacuated its 150 residents to a shelter about 600 feet above sea level after the initial tsunami warning, City Manager Layton Lockett told CNN. There were no initial reports of quake damage in Adak or on Shemya Island, said Ian Dickson, website manager for the Alaska Earthquake Information Center. Dickson said there were 17 measurable aftershocks in the two hours after the quake. First estimates put the quake at magnitude 8.0. The strength was subsequently set by the U.S. Geological Survey at 7.9 magnitude. Quakes hit near New Zealand; no immediate reports of damage . Oklahoma quakes this year top tremors in California . Measuring the magnitude of earthquakes .