4.1

Earthquake Details: Rat Islands, Aleutian Islands, Alaska

Oct 17, 2026, 09:52:05

Depth
94.7 km
Felt reports
No data
Source: USGSUpdated: Oct 18, 2026, 05:18 AM UTC

A magnitude 4.1 earthquake occurred on Oct 17, 2026 at 09:52:05. Epicenter: Rat Islands, Aleutian Islands, Alaska. Reported depth: 94.7 km.

Tsunami information

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Time & depth

Local time
Oct 17, 2026, 00:52:05 HADT
UTC
Oct 17, 2026, 09:52:05 UTC
94.7 km · Intermediate-focus

Between 70 and 300 km deep.

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Nearby earthquakes · 12
M3.9294 km ESE of Attu Station, AlaskaBeforeM3.58 km SW of Atka, AlaskaBeforeM2.6294 km W of Adak, AlaskaBeforeM2.6155 km W of Adak, AlaskaBeforeM2.5Rat Islands, Aleutian Islands, AlaskaBeforeM3.9107 km SSE of Adak, AlaskaBeforeM2.2125 km WSW of Adak, AlaskaAfterM2.571 km SE of Adak, AlaskaAfterM2.4123 km W of Adak, AlaskaAfterM2.466 km SE of Adak, AlaskaAfterM2.5128 km W of Adak, AlaskaAfterM2.379 km SSE of Adak, AlaskaAfter

Agency measurements

Agencies may use different observations and magnitude scales, and initial estimates can change.

  • USGSM 4.1

    us6000u30j

    Depth:
    94.7 km
    Time:
    Updated:
    Oct 18, 2026, 05:18 AM UTC

Technical Details

Depth94.7 km
Significance259
Latitude51.7144
Longitude178.5888
Event IDus6000u30j
Magnitude4.1
Updated:Oct 18, 2026, 05:18:06 UTC

Regional Seismicity

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External Resources

View on USGS Official Site

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: Oct 18, 2026, 05:18 UTC.

Data sources: