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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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3.7

123 km SSW of Nikolski, Alaska

19 October 2026, 14:44:26 (+03) 2026-10-19 11:44:26 UTC

2 sources: EMSC, USGS mb
Did you feel this earthquake?
Magnitude
3.7 mb
Depth
10.0 km
Coordinates
51.9154, -169.5632
Data consistency
87/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
12
Last 30 days
34

Approximate energy released

≈ 5.4 t TNT

2.24e+10 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?

Your report adds to a community map of where and how this earthquake was felt. It takes less than a minute.

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 Maximum intensity (MMI): 1,8 ShakeMap

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

45 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 15
  • M3 23
  • M4 7
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 9
  • 10–20 km 19
  • 20–40 km 9
  • 40–70 km 3
  • 70–150 km 5
  • 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
 3.6 ml 23.0 km 11:44:29.889 Δt 2.93 sn · 11.44 km · ΔM -0.1 Original record
USGS Earthquake Hazards Program Displayed
123 km SSW of Nikolski, Alaska
 3.7 mb 10.0 km 11:44:26.958 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. 20.10.2026 07:48:25 · USGS · update

    depth: 23 → 10 latitude: 52.009 → 51.9154 longitude: -169.632 → -169.5632 magnitude: 3.6 → 3.7 time: 2026-10-19T11:44:29.888+00:00 → 2026-10-19T11:44:26.958+00:00 location: 115 km SSW of Nikolski, Alaska → 123 km SSW of Nikolski, Alaska magnitude type: ml → mb

  2. 20.10.2026 07:48:25 · SISTEM · recompute

    depth: 23 → 10 latitude: 52.009 → 51.9154 longitude: -169.632 → -169.5632 magnitude: 3.6 → 3.7 time: 2026-10-19T11:44:29.888Z → 2026-10-19 11:44:26.958+00:00 magnitude type: ml → mb

  3. 19.10.2026 20:39:55 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  4. 19.10.2026 20:37:48 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  5. 19.10.2026 20:36:44 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  6. 19.10.2026 20:35:41 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  7. 19.10.2026 20:34:36 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  8. 19.10.2026 20:32:33 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  9. 19.10.2026 20:31:31 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  10. 19.10.2026 20:30:27 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  11. 19.10.2026 20:29:22 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  12. 19.10.2026 20:28:21 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  13. 19.10.2026 20:27:19 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  14. 19.10.2026 20:24:03 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  15. 19.10.2026 20:23:02 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  16. 19.10.2026 20:20:57 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  17. 19.10.2026 20:18:48 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  18. 19.10.2026 20:17:45 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  19. 19.10.2026 20:12:37 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  20. 19.10.2026 20:09:06 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  21. 19.10.2026 20:08:02 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  22. 19.10.2026 20:07:01 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  23. 19.10.2026 20:04:58 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  24. 19.10.2026 20:03:52 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  25. 19.10.2026 20:02:46 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  26. 19.10.2026 19:59:09 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  27. 19.10.2026 19:58:03 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  28. 19.10.2026 19:54:54 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  29. 19.10.2026 19:53:52 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  30. 19.10.2026 19:51:43 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  31. 19.10.2026 19:49:38 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  32. 19.10.2026 19:45:29 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

  33. 19.10.2026 19:43:37 · SISTEM · recompute

    time: 2026-10-19T11:44:29.889Z → 2026-10-19 11:44:29.888+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  34. 19.10.2026 19:43:19 · EMSC · update

    time: 2026-10-19T11:44:29.889+00:00 → 2026-10-19T11:44:29.888+00:00

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