The quake had a magnitude of 7.5 and a depth of 40 kilometers below the surface, according to the US earthquake center USGS. At least four aftershocks with a magnitude of 5 and several smaller earthquakes were also registered.
The quake struck about 92 kilometers from the small town of Sand Point, and the tsunami alert was issued for large parts of the south coast of the US state, including the Aleutians and the sparsely populated places of Sand Point, Cold Bay and Kodiak.
The danger zone stretched several hundred kilometers northeast toward Cook Inlet, but does not include Alaska’s largest city, Anchorage, which is located in the innermost part of the fjord.
The US Marine and Atmospheric Research Agency (NOAA) continuously assessed the danger of a tsunami, but gradually downgraded the warning and the danger of tidal waves.
The quake could be felt well in the small town of King Cove, but everything seems to be intact, says city administrator Gary Hennigh to Anchorage Daily News. He says residents and workers at the cannery were evacuated to higher-lying areas pending more information about the tsunami alert.