Skip to content
You are offline: the data shown may be out of date.

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.

Back to map
3.8

136 km SW of Nikolski, Alaska

25 September 2026, 15:37:32 (+03) 2026-09-25 12:37:32 UTC

2 sources: EMSC, USGS ml
Did you feel this earthquake?
Magnitude
3.8 ml
Depth
23.3 km
Coordinates
52.1230, -170.3580
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
1
Last 7 days
13
Last 30 days
30

Approximate energy released

≈ 7.6 t TNT

3.16e+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): 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 14
  • M3 26
  • M4 5
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 9
  • 10–20 km 15
  • 20–40 km 9
  • 40–70 km 4
  • 70–150 km 8
  • 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
 3.8 ml 23.3 km 12:37:32.904 Δt 0 sn · 0 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
136 km SW of Nikolski, Alaska
 3.8 ml 23.3 km 12:37:32.903 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. 26.09.2026 00:18:20 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  2. 26.09.2026 00:11:00 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  3. 26.09.2026 00:08:56 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  4. 26.09.2026 00:02:39 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  5. 26.09.2026 00:00:31 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  6. 25.09.2026 23:57:21 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  7. 25.09.2026 23:50:05 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  8. 25.09.2026 23:46:56 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  9. 25.09.2026 23:45:53 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  10. 25.09.2026 23:44:52 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  11. 25.09.2026 23:43:45 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  12. 25.09.2026 23:42:42 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  13. 25.09.2026 23:41:42 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  14. 25.09.2026 23:38:37 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  15. 25.09.2026 23:36:34 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  16. 25.09.2026 23:35:30 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  17. 25.09.2026 23:33:25 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  18. 25.09.2026 23:31:14 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  19. 25.09.2026 23:29:05 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  20. 25.09.2026 23:27:01 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  21. 25.09.2026 23:24:54 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  22. 25.09.2026 23:23:55 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  23. 25.09.2026 23:22:55 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  24. 25.09.2026 23:20:46 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  25. 25.09.2026 23:19:45 · EMSC · update

    time: 2026-09-25T12:37:32.904+00:00 → 2026-09-25T12:37:32.903+00:00

  26. 25.09.2026 23:17:40 · SISTEM · recompute

    time: 2026-09-25T12:37:32.904Z → 2026-09-25 12:37:32.903+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

This platform is provided for information and data visualisation purposes. Follow the announcements of the competent authorities for official emergency warnings.