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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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3.1

44 km N of Petersville, Alaska

20 October 2026, 02:02:15 (+03) 2026-10-19 23:02:15 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
3.1 ml
Depth
105.5 km
Coordinates
62.8900, -150.9200
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
8
Last 30 days
22

Approximate energy released

≈ 0.7 t TNT

2.82e+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

33 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 23
  • M3 10
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 5
  • 10–20 km 3
  • 20–40 km 0
  • 40–70 km 2
  • 70–150 km 23
  • 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
CENTRAL ALASKA
 3.1 ml 100.0 km 23:02:15.056 Δt 0.25 sn · 2.3 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
44 km N of Petersville, Alaska
 3.1 ml 105.5 km 23:02:15.307 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. 23.10.2026 03:59:52 · USGS · update

    depth: 105.7 → 105.5 latitude: 62.885 → 62.89 longitude: -150.904 → -150.92 time: 2026-10-19T23:02:15.383+00:00 → 2026-10-19T23:02:15.307+00:00 location: 43 km N of Petersville, Alaska → 44 km N of Petersville, Alaska review status: automatic → reviewed

  2. 23.10.2026 03:59:52 · SISTEM · recompute

    depth: 100 → 105.5 latitude: 62.9006 → 62.89 longitude: -150.9588 → -150.92 time: 2026-10-19T23:02:15.056Z → 2026-10-19 23:02:15.307+00:00 review status: automatic → reviewed preferred source: 3 → 4

  3. 20.10.2026 02:33:15 · EMSC · update

    depth: 105.7 → 100 latitude: 62.885 → 62.9006 longitude: -150.904 → -150.9588 time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.056+00:00

  4. 20.10.2026 02:33:15 · SISTEM · recompute

    depth: 105.7 → 100 latitude: 62.885 → 62.9006 longitude: -150.904 → -150.9588 time: 2026-10-19T23:02:15.384Z → 2026-10-19 23:02:15.056+00:00

  5. 20.10.2026 02:32:14 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  6. 20.10.2026 02:30:58 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  7. 20.10.2026 02:29:56 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  8. 20.10.2026 02:28:58 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  9. 20.10.2026 02:22:37 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  10. 20.10.2026 02:18:26 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  11. 20.10.2026 02:16:30 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  12. 20.10.2026 02:15:18 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  13. 20.10.2026 02:14:16 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  14. 20.10.2026 02:13:12 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  15. 20.10.2026 02:09:58 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  16. 20.10.2026 02:08:58 · EMSC · update

    time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  17. 20.10.2026 02:07:53 · EMSC · update

    magnitude: 3 → 3.1 time: 2026-10-19T23:02:15.384+00:00 → 2026-10-19T23:02:15.383+00:00

  18. 20.10.2026 02:07:53 · SISTEM · recompute

    magnitude: 3 → 3.1

  19. 20.10.2026 02:07:14 · USGS · update

    depth: 107.1 → 105.7 latitude: 62.891 → 62.885 longitude: -150.916 → -150.904 magnitude: 3 → 3.1 time: 2026-10-19T23:02:15.260+00:00 → 2026-10-19T23:02:15.383+00:00 location: 44 km N of Petersville, Alaska → 43 km N of Petersville, Alaska

  20. 20.10.2026 02:06:49 · EMSC · update

    depth: 107.1 → 105.7 latitude: 62.891 → 62.885 longitude: -150.916 → -150.904 time: 2026-10-19T23:02:15.260+00:00 → 2026-10-19T23:02:15.383+00:00

  21. 20.10.2026 02:06:49 · SISTEM · recompute

    depth: 107.1 → 105.7 latitude: 62.891 → 62.885 longitude: -150.916 → -150.904 time: 2026-10-19T23:02:15.260Z → 2026-10-19 23:02:15.384+00:00

  22. 20.10.2026 02:05:47 · EMSC · update

    magnitude: 2.9 → 3

  23. 20.10.2026 02:05:47 · SISTEM · recompute

    magnitude: 2.9 → 3

  24. 20.10.2026 02:05:35 · SISTEM · recompute

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

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