4.2
Earthquake Details: 30 km S of Adak, Alaska
Nov 4, 2026, 19:22:20
- Depth
- 74.5 km
- Felt reports
- No data
Source: USGSUpdated: Nov 5, 2026, 04:15 PM UTC
A magnitude 4.2 earthquake occurred on Nov 4, 2026 at 19:22:20. Epicenter: 30 km S of Adak, Alaska. Reported depth: 74.5 km.
Tsunami information
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Time & depth
- Local time
- Nov 4, 2026, 09:22:20 HAST
- UTC
- Nov 4, 2026, 19:22:20 UTC
74.5 km · Intermediate-focus
Between 70 and 300 km deep.
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Agency measurements
Agencies may use different observations and magnitude scales, and initial estimates can change.
- USGSM 4.2
us7000tw4w
- Depth:
- 74.5 km
- Time:
- Updated:
- Nov 5, 2026, 04:15 PM UTC
Technical Details
Depth74.5 km
Significance271
Latitude51.5984
Longitude-176.6581
Event IDus7000tw4w
Magnitude4.2
Updated:Nov 5, 2026, 16:15:59 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: Nov 5, 2026, 16:15 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).