2021-07-18T07:53:07.801Z51.4061-178.16119.6manualconfirmedUSGS1.6ml1Origin/20210718143219.791459.187484Magnitude/20210718143219.791511.187485USGS117 km WSW of Adak, Alaskaregion nameakcatalogak021958fhlocontributorID