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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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5.0

SOUTH OF ALASKA

29 October 2026, 23:14:31 (+03) 2026-10-29 20:14:31 UTC

1 source: EMSC mw
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Magnitude
5.0 mw
Depth
10.0 km
Coordinates
53.6315, -162.9794
Data consistency
53/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
27
Last 30 days
55

Approximate energy released

≈ 477 t TNT

2.00e+12 J

Approximated with the Gutenberg–Richter relation (log E = 1.5 M + 4.8); depends on magnitude type. Gutenberg & Richter (1956).

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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.

Nearby places

No records.

Nearby faults (50 km)

No mapped fault within 50 km.

Last year, within 100 km

56 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 32
  • M3 16
  • M4 5
  • M5 3
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 16
  • 10–20 km 27
  • 20–40 km 13
  • 40–70 km 0
  • 70–150 km 0
  • 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 Displayed
SOUTH OF ALASKA
 5.0 mw 10.0 km 20:14:31.820 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

Revision history

  1. 30.10.2026 10:38:14 · EMSC · update

    depth: 15.6 → 10 latitude: 53.5843 → 53.6315 longitude: -163.0279 → -162.9794 time: 2026-10-29T20:14:32.548+00:00 → 2026-10-29T20:14:31.820+00:00 location: UNIMAK ISLAND REGION, ALASKA → SOUTH OF ALASKA

  2. 30.10.2026 10:38:14 · SISTEM · recompute

    depth: 15.6 → 10 latitude: 53.5843 → 53.6315 longitude: -163.0279 → -162.9794 time: 2026-10-29T20:14:32.548Z → 2026-10-29 20:14:31.820+00:00

  3. 29.10.2026 23:35:24 · EMSC · update

    depth: 27 → 15.6 latitude: 53.6827 → 53.5843 longitude: -163.0419 → -163.0279 magnitude: 5.1 → 5 time: 2026-10-29T20:14:36.360+00:00 → 2026-10-29T20:14:32.548+00:00 magnitude type: m → mw

  4. 29.10.2026 23:35:24 · SISTEM · recompute

    depth: 27 → 15.6 latitude: 53.6827 → 53.5843 longitude: -163.0419 → -163.0279 magnitude: 5.1 → 5 time: 2026-10-29T20:14:36.360Z → 2026-10-29 20:14:32.548+00:00 magnitude type: m → mw

  5. 29.10.2026 23:31:01 · EMSC · update

    depth: 10 → 27 latitude: 53.772 → 53.6827 longitude: -163.179 → -163.0419 time: 2026-10-29T20:14:32.970+00:00 → 2026-10-29T20:14:36.360+00:00

  6. 29.10.2026 23:31:01 · SISTEM · recompute

    depth: 10 → 27 latitude: 53.772 → 53.6827 longitude: -163.179 → -163.0419 time: 2026-10-29T20:14:32.970Z → 2026-10-29 20:14:36.360+00:00

  7. 29.10.2026 23:30:00 · EMSC · update

    depth: 24 → 10 latitude: 53.9249 → 53.772 longitude: -163.1218 → -163.179 time: 2026-10-29T20:14:35.290+00:00 → 2026-10-29T20:14:32.970+00:00

  8. 29.10.2026 23:30:00 · SISTEM · recompute

    depth: 24 → 10 latitude: 53.9249 → 53.772 longitude: -163.1218 → -163.179 time: 2026-10-29T20:14:35.290Z → 2026-10-29 20:14:32.970+00:00

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