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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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2.8

22 km N of Larsen Bay, Alaska

18 October 2026, 07:05:46 (+03) 2026-10-18 04:05:46 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
2.8 ml
Depth
29.1 km
Coordinates
57.7380, -153.9980
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
5
Last 30 days
12

Approximate energy released

≈ 0.2 t TNT

1.00e+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

17 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 13
  • M3 4
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 1
  • 10–20 km 0
  • 20–40 km 3
  • 40–70 km 10
  • 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
KODIAK ISLAND REGION, ALASKA
 2.8 ml 35.0 km 04:05:46.753 Δt 0.23 sn · 1.53 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
22 km N of Larsen Bay, Alaska
 2.8 ml 29.1 km 04:05:46.522 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. 18.10.2026 09:55:53 · USGS · update

    depth: 28.7 → 29.1 latitude: 57.73 → 57.738 longitude: -153.987 → -153.998 time: 2026-10-18T04:05:46.635+00:00 → 2026-10-18T04:05:46.522+00:00 location: 21 km N of Larsen Bay, Alaska → 22 km N of Larsen Bay, Alaska review status: automatic → reviewed

  2. 18.10.2026 09:55:53 · SISTEM · recompute

    depth: 35 → 29.1 latitude: 57.7294 → 57.738 longitude: -154.0181 → -153.998 time: 2026-10-18T04:05:46.753Z → 2026-10-18 04:05:46.522+00:00 review status: automatic → reviewed preferred source: 3 → 4

  3. 18.10.2026 07:27:42 · EMSC · update

    depth: 28.7 → 35 latitude: 57.73 → 57.7294 longitude: -153.989 → -154.0181 time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.753+00:00

  4. 18.10.2026 07:27:42 · SISTEM · recompute

    depth: 28.7 → 35 latitude: 57.73 → 57.7294 longitude: -153.989 → -154.0181 time: 2026-10-18T04:05:46.648Z → 2026-10-18 04:05:46.753+00:00

  5. 18.10.2026 07:26:40 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  6. 18.10.2026 07:25:39 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  7. 18.10.2026 07:24:34 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  8. 18.10.2026 07:23:29 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  9. 18.10.2026 07:22:27 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  10. 18.10.2026 07:17:03 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  11. 18.10.2026 07:16:04 · EMSC · update

    time: 2026-10-18T04:05:46.648+00:00 → 2026-10-18T04:05:46.647+00:00

  12. 18.10.2026 07:10:55 · USGS · update

    longitude: -153.989 → -153.987 time: 2026-10-18T04:05:46.647+00:00 → 2026-10-18T04:05:46.635+00:00

  13. 18.10.2026 07:09:53 · USGS · update

    depth: 27.7 → 28.7 latitude: 57.733 → 57.73 longitude: -154.003 → -153.989 magnitude: 2.7 → 2.8 time: 2026-10-18T04:05:46.753+00:00 → 2026-10-18T04:05:46.647+00:00

  14. 18.10.2026 07:09:52 · EMSC · update

    depth: 27.7 → 28.7 latitude: 57.733 → 57.73 longitude: -154.003 → -153.989 magnitude: 2.7 → 2.8 time: 2026-10-18T04:05:46.753+00:00 → 2026-10-18T04:05:46.647+00:00

  15. 18.10.2026 07:09:52 · SISTEM · recompute

    depth: 27.7 → 28.7 latitude: 57.733 → 57.73 longitude: -154.003 → -153.989 magnitude: 2.7 → 2.8 time: 2026-10-18T04:05:46.753Z → 2026-10-18 04:05:46.648+00:00

  16. 18.10.2026 07:08:48 · USGS · update

    depth: 29.1 → 27.7 latitude: 57.731 → 57.733 longitude: -154.011 → -154.003 magnitude: 2.8 → 2.7 time: 2026-10-18T04:05:46.795+00:00 → 2026-10-18T04:05:46.753+00:00

  17. 18.10.2026 07:08:47 · EMSC · update

    depth: 29.1 → 27.7 latitude: 57.731 → 57.733 longitude: -154.011 → -154.003 magnitude: 2.8 → 2.7 time: 2026-10-18T04:05:46.796+00:00 → 2026-10-18T04:05:46.753+00:00

  18. 18.10.2026 07:08:47 · SISTEM · recompute

    depth: 29.1 → 27.7 latitude: 57.731 → 57.733 longitude: -154.011 → -154.003 magnitude: 2.8 → 2.7 time: 2026-10-18T04:05:46.796Z → 2026-10-18 04:05:46.753+00:00

  19. 18.10.2026 07:07:46 · SISTEM · recompute

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

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