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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

76 km WSW of Karluk, Alaska

16 October 2026, 08:26:37 (+03) 2026-10-16 05:26:37 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
3.4 ml
Depth
67.5 km
Coordinates
57.2450, -155.5850
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
7
Last 30 days
24

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?

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

30 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 22
  • M3 8
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 7
  • 10–20 km 2
  • 20–40 km 3
  • 40–70 km 12
  • 70–150 km 6
  • 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
ALASKA PENINSULA
 3.3 ml 67.5 km 05:26:37.324 Δt 0.01 sn · 0.45 km · ΔM -0.1 Original record
USGS Earthquake Hazards Program Displayed
76 km WSW of Karluk, Alaska
 3.4 ml 67.5 km 05:26:37.313 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 01:15:12 · USGS · update

    latitude: 57.249 → 57.245 longitude: -155.584 → -155.585 magnitude: 3.3 → 3.4 time: 2026-10-16T05:26:37.323+00:00 → 2026-10-16T05:26:37.313+00:00 review status: automatic → reviewed

  2. 20.10.2026 01:15:12 · SISTEM · recompute

    latitude: 57.249 → 57.245 longitude: -155.584 → -155.585 magnitude: 3.3 → 3.4 time: 2026-10-16T05:26:37.324Z → 2026-10-16 05:26:37.313+00:00 review status: automatic → reviewed preferred source: 3 → 4

  3. 16.10.2026 21:05:20 · SISTEM · recompute

    source count: 1 → 2 confirming sources: emsc → emsc,usgs

  4. 16.10.2026 10:09:19 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  5. 16.10.2026 10:08:18 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  6. 16.10.2026 10:02:58 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  7. 16.10.2026 10:00:56 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  8. 16.10.2026 09:57:50 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  9. 16.10.2026 09:54:43 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  10. 16.10.2026 09:51:37 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  11. 16.10.2026 09:49:34 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  12. 16.10.2026 09:48:31 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  13. 16.10.2026 09:47:32 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  14. 16.10.2026 09:46:28 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  15. 16.10.2026 09:44:20 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  16. 16.10.2026 09:40:30 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  17. 16.10.2026 09:39:05 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  18. 16.10.2026 09:37:58 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  19. 16.10.2026 09:36:54 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  20. 16.10.2026 09:34:49 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  21. 16.10.2026 09:29:25 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  22. 16.10.2026 09:25:17 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  23. 16.10.2026 09:24:13 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  24. 16.10.2026 09:15:50 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  25. 16.10.2026 09:13:46 · EMSC · update

    time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  26. 16.10.2026 09:11:37 · EMSC · update

    depth: 65.7 → 67.5 latitude: 57.241 → 57.249 longitude: -155.573 → -155.584 time: 2026-10-16T05:26:37.324+00:00 → 2026-10-16T05:26:37.323+00:00

  27. 16.10.2026 09:11:37 · SISTEM · recompute

    depth: 65.7 → 67.5 latitude: 57.241 → 57.249 longitude: -155.573 → -155.584

  28. 16.10.2026 08:30:41 · EMSC · update

    depth: 63 → 65.7 latitude: 57.235 → 57.241 longitude: -155.569 → -155.573 time: 2026-10-16T05:26:37.435+00:00 → 2026-10-16T05:26:37.324+00:00

  29. 16.10.2026 08:30:41 · SISTEM · recompute

    depth: 63 → 65.7 latitude: 57.235 → 57.241 longitude: -155.569 → -155.573 time: 2026-10-16T05:26:37.435Z → 2026-10-16 05:26:37.324+00:00

  30. 16.10.2026 08:29:36 · EMSC · update

    time: 2026-10-16T05:26:37.435+00:00 → 2026-10-16T05:26:37.434+00:00

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