4.5
Earthquake Details: 111 km ESE of Atka, Alaska
Oct 31, 2026, 18:51:02
- Depth
- 44.87 km
- Felt reports
- No data
Source: USGSUpdated: Oct 31, 2026, 09:58 PM UTC
A magnitude 4.5 earthquake occurred on Oct 31, 2026 at 18:51:02. Epicenter: 111 km ESE of Atka, Alaska. Reported depth: 44.87 km.
Tsunami information
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Time & depth
- Local time
- Oct 31, 2026, 06:51:02 GMT-12
- UTC
- Oct 31, 2026, 18:51:02 UTC
44.87 km · Shallow-focus
Less than 70 km deep. Shaking is often stronger near the epicentre.
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Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 4.5
us7000tuk4
- Depth:
- 44.87 km
- Time:
- Updated:
- Oct 31, 2026, 09:58 PM UTC
Technical Details
Depth44.87 km
Significance312
Latitude51.6994
Longitude-172.7931
Event IDus7000tuk4
Magnitude4.5
Updated:Oct 31, 2026, 21:58:16 UTC
Regional Seismicity
View recent seismic activity near this event:
External Resources
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 31, 2026, 21:58 UTC.
Data sources:
- USGS — Credit: U.S. Geological Survey.
- EMSC — Credit: EMSC/CSEM. Event catalogue data are provided under CC BY 4.0.
- JMA — Source: Japan Meteorological Agency (JMA).
- Geoscience Australia — Based on Australian Earthquakes data by Geoscience Australia. © Commonwealth of Australia. Licensed under CC BY 4.0; the section 5 disclaimer applies.
- GeoNet — We acknowledge the New Zealand GeoNet programme and its sponsors NHC, Earth Sciences NZ, LINZ, NEMA and MBIE for providing earthquake data.
- CENC / Wolfx — CENC earthquake parameters via Wolfx, an independent unofficial relay.
- GFZ / GEOFON — Locations, depths and magnitudes: GFZ/GEOFON using GEVN network data (CC BY 4.0).