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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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2.5

124 km SSW of Nikolski, Alaska

3 November 2026, 19:38:55 (+03) 2026-11-03 16:38:55 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
2.5 ml
Depth
10.0 km
Coordinates
51.8745, -169.4474
Data consistency
80/100

Regional activity (100 km)

Last 24 hours
2
Last 7 days
13
Last 30 days
32

Approximate energy released

≈ 0.1 t TNT

3.55e+8 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 13
  • M3 21
  • M4 7
  • 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

Sources report different values.
Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
FOX ISLANDS, ALEUTIAN ISLANDS
 3.1 ml 9.1 km 16:38:56.293 Δt 0.99 sn · 4.15 km · ΔM +0.6 Original record
USGS Earthquake Hazards Program Displayed
124 km SSW of Nikolski, Alaska
 2.5 ml 10.0 km 16:38:55.304 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. 03.11.2026 23:21:00 · USGS · update

    depth: 9.1 → 10 latitude: 51.906 → 51.8745 longitude: -169.415 → -169.4474 magnitude: 3.1 → 2.5 time: 2026-11-03T16:38:56.292+00:00 → 2026-11-03T16:38:55.304+00:00 location: 120 km SSW of Nikolski, Alaska → 124 km SSW of Nikolski, Alaska

  2. 03.11.2026 23:21:00 · SISTEM · recompute

    depth: 9.1 → 10 latitude: 51.906 → 51.8745 longitude: -169.415 → -169.4474 magnitude: 3.1 → 2.5 time: 2026-11-03T16:38:56.292Z → 2026-11-03 16:38:55.304+00:00

  3. 03.11.2026 22:39:47 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  4. 03.11.2026 22:38:46 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  5. 03.11.2026 22:37:45 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  6. 03.11.2026 22:36:42 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  7. 03.11.2026 22:33:40 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  8. 03.11.2026 22:30:31 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  9. 03.11.2026 22:24:00 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  10. 03.11.2026 22:22:57 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  11. 03.11.2026 22:21:55 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  12. 03.11.2026 22:20:54 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  13. 03.11.2026 22:18:48 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  14. 03.11.2026 22:17:48 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  15. 03.11.2026 22:16:45 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  16. 03.11.2026 22:15:45 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  17. 03.11.2026 22:13:43 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  18. 03.11.2026 22:10:38 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  19. 03.11.2026 22:09:35 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  20. 03.11.2026 22:04:20 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  21. 03.11.2026 22:03:17 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  22. 03.11.2026 22:02:16 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  23. 03.11.2026 22:01:09 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  24. 03.11.2026 21:57:53 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  25. 03.11.2026 21:56:48 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  26. 03.11.2026 21:53:41 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  27. 03.11.2026 21:51:38 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  28. 03.11.2026 21:50:36 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  29. 03.11.2026 21:47:24 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  30. 03.11.2026 21:46:21 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  31. 03.11.2026 21:45:23 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  32. 03.11.2026 21:44:16 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  33. 03.11.2026 21:42:00 · EMSC · update

    time: 2026-11-03T16:38:56.293+00:00 → 2026-11-03T16:38:56.292+00:00

  34. 03.11.2026 21:40:57 · SISTEM · recompute

    time: 2026-11-03T16:38:56.293Z → 2026-11-03 16:38:56.292+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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