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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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3.7

37 km SW of Karluk, Alaska

22 September 2026, 11:48:00 (+03) 2026-09-22 08:48:00 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
3.7 ml
Depth
50.9 km
Coordinates
57.2950, -154.8270
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
9
Last 30 days
25

Approximate energy released

≈ 5.4 t TNT

2.24e+10 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?

Your report adds to a community map of where and how this earthquake was felt. It takes less than a minute.

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): 3,0 Felt reports: 1 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

30 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 21
  • M3 9
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 7
  • 10–20 km 0
  • 20–40 km 5
  • 40–70 km 13
  • 70–150 km 5
  • 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
 3.7 ml 50.9 km 08:48:00.582 Δt 0 sn · 0 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
37 km SW of Karluk, Alaska
 3.7 ml 50.9 km 08:48:00.581 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. 25.09.2026 01:24:25 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  2. 25.09.2026 01:22:25 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  3. 25.09.2026 01:19:17 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  4. 25.09.2026 01:16:08 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  5. 25.09.2026 01:15:07 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  6. 25.09.2026 01:10:20 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  7. 25.09.2026 01:08:50 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  8. 25.09.2026 01:07:46 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  9. 25.09.2026 01:05:14 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  10. 25.09.2026 01:03:14 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  11. 25.09.2026 01:02:10 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  12. 25.09.2026 00:59:05 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  13. 25.09.2026 00:56:06 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  14. 25.09.2026 00:50:53 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  15. 25.09.2026 00:46:45 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  16. 25.09.2026 00:43:39 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  17. 25.09.2026 00:41:35 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  18. 25.09.2026 00:40:33 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  19. 25.09.2026 00:39:32 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  20. 25.09.2026 00:38:09 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  21. 25.09.2026 00:29:22 · EMSC · update

    time: 2026-09-22T08:48:00.582+00:00 → 2026-09-22T08:48:00.581+00:00

  22. 25.09.2026 00:24:56 · SISTEM · recompute

    time: 2026-09-22T08:48:00.582Z → 2026-09-22 08:48:00.581+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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