Magnitude 4.1 - 107 miles N of Little Diomede




August 25, 2021 20:49:55 AKDT (August 26, 2021 04:49:55 UTC)
67.2101°N 170.0957°W    Depth 18.2 miles (29 km)

No reports of this event being felt have been received at this time.

This event has been reviewed by a seismologist

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Tectonic Setting of Northwest Alaska

A wide, diffuse zone of seismicity extends from northwest Alaska across the Bering Strait into eastern Russia. This zone is believed to mark the northern boundary of the Bering microplate. Moderate-to-large normal faulting and strike-slip events have occurred in this region, including on the Seward Peninsula. The largest of these events was the 1958 M7.3 Huslia Earthquake. It was a normal faulting event that produced extensive failures in unconsolidated surficial deposits within a northeast-striking zone. In 2014, a vigorous earthquake swarm was recorded about 25 miles (40 km) north of Noatak on the Lisburne Peninsula.