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At 18:59:25 UTC on Saturday, February 27, an earthquake occurred with an epicenter just across the Knik Arm of Cook Inlet from Anchorage, Alaska, where light to moderate shaking was felt. A tsunami warning was not issued for this event.
A magnitude 7.6 earthquake occurred on October 19, 2020 southeast of Sand Point, Alaska. This is within the footprint of the Network of the Americas (NOTA) GNSS network operated by UNAVCO. The earthquake prompted tsunami warnings in communities across coastal Alaska and caused damage in and around Sand Point.
The Simeonof M7.8 earthquake occurred on July 22, 2020 near the mostly uninhabited Shumagin Islands. The earthquake ruptured a portion of the Aleutian subduction zone that has not hosted an earthquake in over 100 years. Shaking was felt as far as 500 miles from the epicenter. No significant damage was reported.
A magnitude 5.8 earthquake occurred at 17:40:49 UTC (10:40:49 local) on June 24, 2020, 18 km SSE of Lone Pine, California. For more information, see the USGS Earthquake Hazards Program event page.
The July 2019 Ridgecrest earthquakes occurred in southern California not far from the city of Ridgecrest. Approximately 30 million people felt the mainshock. The GAGE facility has instrumentation in the footprint of the earthquake series and curated data to be used for scientific investigation.