2020-12-15T02:54:47.91Z51.8615-177.81966678.23manualconfirmedUSGS1.15ml1Origin/20201215033643.530173.3033448Magnitude/20201215033643.530211.3033449USGS81 km W of Adak, Alaskaregion nameavcatalogav91168416contributorID