M3.9

USGS earthquake · M3.9209 km SSE of Atka, Alaska

Name: M3.9 earthquake at 209 km SSE of Atka, Alaska
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Oct 6, 2026, 2:22 PM UTC · 18 days ago

Map centered on the earthquake at 209 km SSE of Atka, Alaska, with a marker at its epicenter

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Shaking intensity

Strongest contour: Weak (II). Modelled by USGS ShakeMap; contours show where shaking was expected to reach each level, not damage.

Depth10.0 km

Origin timeOct 6, 2026, 2:22 PM UTC

Coordinates50.524, -172.833

Tsunami flagNot reported

Magnitude scaleBody-wave magnitude

SolutionReviewed by a seismologist

Official source

U.S. Geological Survey

Terremoto preserves this event snapshot for a stable public link. USGS remains the authoritative source for revisions and scientific details. Shaking contours and population estimates come from USGS ShakeMap and PAGER, which revise them as more data arrives.

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USGS earthquake · M3.9209 km SSE of Atka, Alaska

U.S. Geological Survey

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