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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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4.4

85 km SSW of Nikolski, Alaska

27 September 2026, 00:31:20 (+03) 2026-09-26 21:31:20 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
4.4 ml
Depth
15.4 km
Coordinates
52.2440, -169.3930
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
14
Last 30 days
35

Approximate energy released

≈ 60 t TNT

2.51e+11 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 Maximum intensity (MMI): 2,3 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 18
  • M3 21
  • M4 6
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 11
  • 10–20 km 19
  • 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
 4.4 ml 15.4 km 21:31:20.055 Δt 0 sn · 0 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
85 km SSW of Nikolski, Alaska
 4.4 ml 15.4 km 21:31:20.054 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. 27.09.2026 08:37:40 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  2. 27.09.2026 08:35:30 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  3. 27.09.2026 08:24:55 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  4. 27.09.2026 08:20:45 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  5. 27.09.2026 08:18:39 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  6. 27.09.2026 08:17:40 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  7. 27.09.2026 08:14:30 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  8. 27.09.2026 08:13:29 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  9. 27.09.2026 08:12:26 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  10. 27.09.2026 08:06:14 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  11. 27.09.2026 08:05:08 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  12. 27.09.2026 08:04:09 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  13. 27.09.2026 08:03:08 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  14. 27.09.2026 08:02:05 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  15. 27.09.2026 07:56:54 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  16. 27.09.2026 07:54:48 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  17. 27.09.2026 07:48:33 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  18. 27.09.2026 07:47:29 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  19. 27.09.2026 07:46:27 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  20. 27.09.2026 07:43:18 · EMSC · update

    time: 2026-09-26T21:31:20.055+00:00 → 2026-09-26T21:31:20.054+00:00

  21. 27.09.2026 07:41:15 · SISTEM · recompute

    time: 2026-09-26T21:31:20.055Z → 2026-09-26 21:31:20.054+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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