4.0

Earthquake Details: 92 km SSW of Unalaska, Alaska

Sep 15, 2026, 05:21:25

A magnitude 4.0 earthquake occurred near 92 km SSW of Unalaska, Alaska on Sep 15, 2026 at 05:21:25. The seismic event was recorded at a depth of 18.4 km. No tsunami warning was issued.

No Tsunami WarningStatus: ReviewedType: Earthquake

Regional Seismicity

View recent seismic activity near this event:

Technical Details

Depth18.4 km
Significance246
Latitude53.0990
Longitude-167.0280
Event IDaka2026shcitc
Magnitude4.0
Updated:Sep 15, 2026, 15:22:44 UTC

External Resources

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Time & depth

Local time
Sep 15, 2026, 05:21:25
UTC
Sep 15, 2026, 05:21:25 UTC
18.4 km · Shallow-focus

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

Nearby event sequence · 12
M3.1118 km ESE of Atka, AlaskaBeforeM3.690 km SSW of Unalaska, AlaskaBeforeM3.686 km SSW of Unalaska, AlaskaBeforeM3.474 km SE of Atka, AlaskaBeforeM3.494 km SSW of Nikolski, AlaskaBeforeM3.0150 km S of False Pass, AlaskaBeforeM3.278 km E of Nikolski, AlaskaBeforeM3.3116 km SE of Akutan, AlaskaBeforeM3.0101 km SSW of Nikolski, AlaskaBeforeM2.997 km SSW of Nikolski, AlaskaAfterM3.9167 km WSW of Nikolski, AlaskaAfterM3.695 km SSW of Unalaska, AlaskaAfter

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: Sep 15, 2026, 15:22 UTC.

Data sources: