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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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3.3

272 km SE of Chiniak, Alaska

26 October 2026, 23:10:52 (+03) 2026-10-26 20:10:52 UTC

2 sources: EMSC, USGS ml Under moderator review
Did you feel this earthquake?
Magnitude
3.3 ml
Depth
10.0 km
Coordinates
56.0636, -148.8246
Data consistency
70/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
0
Last 30 days
4

Approximate energy released

≈ 1.3 t TNT

5.62e+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

6 earthquakes

By magnitude

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

By depth

  • 0–10 km 1
  • 10–20 km 4
  • 20–40 km 0
  • 40–70 km 0
  • 70–150 km 1
  • 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
GULF OF ALASKA
 3.1 ml 5.0 km 20:11:01.030 Δt 8.65 sn · 75.09 km · ΔM -0.2 Original record
USGS Earthquake Hazards Program Displayed
272 km SE of Chiniak, Alaska
 3.3 ml 10.0 km 20:10:52.377 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. 27.10.2026 08:57:50 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  2. 27.10.2026 08:52:40 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  3. 27.10.2026 08:51:37 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  4. 27.10.2026 08:47:25 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  5. 27.10.2026 08:43:07 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  6. 27.10.2026 08:41:01 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  7. 27.10.2026 08:39:57 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  8. 27.10.2026 08:36:56 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  9. 27.10.2026 08:33:45 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  10. 27.10.2026 08:30:33 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  11. 27.10.2026 08:24:18 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  12. 27.10.2026 08:22:05 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  13. 27.10.2026 08:19:00 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  14. 27.10.2026 08:13:46 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  15. 27.10.2026 08:05:24 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  16. 27.10.2026 08:03:18 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  17. 27.10.2026 08:02:15 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  18. 27.10.2026 08:01:06 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  19. 27.10.2026 08:00:00 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  20. 27.10.2026 07:58:56 · EMSC · update

    time: 2026-10-26T20:11:01.030+00:00 → 2026-10-26T20:11:01.029+00:00

  21. 27.10.2026 07:57:54 · EMSC · update

    depth: 10 → 5 latitude: 56.0636 → 56.73 longitude: -148.8246 → -148.638 magnitude: 3.3 → 3.1 time: 2026-10-26T20:10:52.377+00:00 → 2026-10-26T20:11:01.029+00:00

  22. 26.10.2026 23:32:45 · SISTEM · recompute

    source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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