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Significant earthquake

This summarises a recorded earthquake only; it is not a warning or a prediction. Follow AFAD and the competent authorities for official statements and guidance.

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3.4

110 km SSW of Nikolski, Alaska

27 October 2026, 21:41:48 (+03) 2026-10-27 18:41:48 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
3.4 ml
Depth
10.9 km
Coordinates
51.9730, -169.2300
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
13
Last 30 days
33

Approximate energy released

≈ 1.9 t TNT

7.94e+9 J

Approximated with the Gutenberg–Richter relation (log E = 1.5 M + 4.8); depends on magnitude type. Gutenberg & Richter (1956).

Did you feel this earthquake?

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Community reports

Based on voluntary reports from users; not an instrumental measurement or official intensity. For official information follow AFAD and Kandilli Observatory announcements.

Impact information reported by sources

  • USGS Earthquake Hazards Program Tsunami flag: No

These values are automatic products of the respective agency, not an assessment by this platform. For tsunami warnings follow the Kandilli Observatory Regional Earthquake-Tsunami Monitoring Center and AFAD.

Nearby places

No records.

Nearby faults (50 km)

No mapped fault within 50 km.

Last year, within 100 km

41 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 15
  • M3 20
  • M4 6
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 8
  • 10–20 km 18
  • 20–40 km 9
  • 40–70 km 3
  • 70–150 km 3
  • 150+ km 0

Largest previous earthquakes within 100 km

Largest earthquakes in the platform catalogue and entries from historical catalogues (with citation).

Comparison with past records

…

No earlier earthquakes are recorded in this area.

  • Source:

Where does this earthquake come from?

Source comparison

Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
FOX ISLANDS, ALEUTIAN ISLANDS
 3.4 ml 10.9 km 18:41:48.997 Δt 0 sn · 0 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
110 km SSW of Nikolski, Alaska
 3.4 ml 10.9 km 18:41:48.996 Δt 0 sn · 0 km · ΔM 0 Original record

This value summarises agreement between sources; it is not a measure of scientific accuracy. Euro-Mediterranean Seismological Centre (EMSC-CSEM) — CC BY 4.0 U.S. Geological Survey (USGS) Earthquake Hazards Program — Public domain (U.S. Government)

Revision history

  1. 28.10.2026 04:56:00 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  2. 28.10.2026 04:54:58 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  3. 28.10.2026 04:53:55 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  4. 28.10.2026 04:52:50 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  5. 28.10.2026 04:50:43 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  6. 28.10.2026 04:44:28 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  7. 28.10.2026 04:43:25 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  8. 28.10.2026 04:40:10 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  9. 28.10.2026 04:37:00 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  10. 28.10.2026 04:35:56 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  11. 28.10.2026 04:30:44 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  12. 28.10.2026 04:28:34 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  13. 28.10.2026 04:27:32 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  14. 28.10.2026 04:24:26 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  15. 28.10.2026 04:23:22 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  16. 28.10.2026 04:22:21 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  17. 28.10.2026 04:20:02 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  18. 28.10.2026 04:18:00 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  19. 28.10.2026 04:15:57 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  20. 28.10.2026 04:14:53 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  21. 28.10.2026 04:12:49 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  22. 28.10.2026 04:10:46 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  23. 28.10.2026 04:09:25 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  24. 28.10.2026 04:08:20 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  25. 28.10.2026 04:04:02 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  26. 28.10.2026 04:03:02 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  27. 28.10.2026 04:01:56 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  28. 28.10.2026 04:01:00 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  29. 28.10.2026 03:59:11 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  30. 28.10.2026 03:58:03 · EMSC · update

    time: 2026-10-27T18:41:48.997+00:00 → 2026-10-27T18:41:48.996+00:00

  31. 28.10.2026 03:57:01 · SISTEM · recompute

    time: 2026-10-27T18:41:48.997Z → 2026-10-27 18:41:48.996+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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