On 29th May 2015 at 07:00:08 UTC an earthquake of magnitude Mw6.8 occurred on the Alaska Peninsula  with the epicentral location 56.74N, 153.73W. Read more.

The event was recorded at Irish National Seismic Network (INSN) stations, and was automatically detected and located by the SeisComP earthquake monitoring software at DIAS. See seismogram below.

Alaska is a known seismically active region, with 18 earthquakes greater than magnitude 5 in the past year. The most notable previous event from the past 12 months was a  magnitude 6.2 earthquake from September 2014. The largest recorded event in the region was the Great Alaskan Earthquake of 1964, when a magnitude Mw9.3 struck near Anchorage in Southern Alaska.