Earthquake Details: 239 km ESE of Attu Station, Alaska, United States

8/15/2026, 10:54:20 PM

A magnitude 3.4 earthquake occurred near 239 km ESE of Attu Station, Alaska, United States on 8/15/2026 at 10:54:20 PM. The seismic event was recorded at a depth of 20 km. No tsunami warning was issued.

No Tsunami WarningStatus: reviewedType: earthquake

Technical Details

Depth20 km

Significance178

Latitude51.8390

Longitude176.2850

Event IDaka2026qdeubb

Magnitude3.4

Updated:8/17/2026, 9:13:14 AM

External Resources

View on USGS Official Site

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Time & depth

Local time: 8/15/2026, 10:54:20 PM
UTC: 8/15/2026, 10:54:20 PM UTC

20 km · Shallow-focus

Less than 70 km deep. Shaking is often stronger near the epicentre.

Nearby event sequence · 6

M3.4240 km ESE of Attu Station, Alaska, United StatesBefore8/13/2026, 1:46:44 AM M2.5Rat Islands, Aleutian Islands, Alaska, United StatesBefore8/13/2026, 8:22:33 AM M2.8Rat Islands, Aleutian Islands, Alaska, United StatesBefore8/13/2026, 10:12:50 AM M3.3232 km ESE of Attu Station, Alaska, United StatesBefore8/14/2026, 1:58:14 AM M2.6Rat Islands, Aleutian Islands, Alaska, United StatesBefore8/15/2026, 3:57:58 AM M2.8Rat Islands, Aleutian Islands, Alaska, United StatesBefore8/15/2026, 6:42:55 PM

Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Aug 17, 2026, 09:13 AM UTC. Data sources: USGS / EMSC / JMA / Geoscience Australia / GeoNet.