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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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6.5

Bonin Islands, Japan region

25 October 2026, 05:09:23 (+03) 2026-10-25 02:09:23 UTC

3 sources: EMSC, USGS, GFZ mww
Did you feel this earthquake?
Magnitude
6.5 mww
Depth
492.4 km
Coordinates
27.7953, 139.6184
Data consistency
99/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
0
Last 30 days
6

Approximate energy released

≈ 85 kt TNT

3.55e+14 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

6 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 0
  • M4 4
  • M5 1
  • M6 1
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 0
  • 20–40 km 0
  • 40–70 km 0
  • 70–150 km 0
  • 150+ km 6

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
BONIN ISLANDS, JAPAN REGION
 6.5 mw 490.3 km 02:09:23.830 Δt 0.01 sn · 4.51 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
Bonin Islands, Japan region
 6.5 mww 492.4 km 02:09:23.818 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Bonin Islands, Japan Region
 6.5 Mw 500.9 km 02:09:24.620 Δt 0.8 sn · 3.41 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) GEOFON Program, GFZ Helmholtz Centre for Geosciences — CC BY 4.0

Revision history

  1. 25.10.2026 10:43:58 · EMSC · update

    depth: 492.4 → 490.3 latitude: 27.7953 → 27.8359 longitude: 139.6184 → 139.6148 time: 2026-10-25T02:09:23.818+00:00 → 2026-10-25T02:09:23.830+00:00

  2. 25.10.2026 05:51:25 · GFZ · update

    depth: 483 → 500.9 latitude: 27.747 → 27.818 longitude: 139.639 → 139.595 time: 2026-10-25T02:09:23.930+00:00 → 2026-10-25T02:09:24.620+00:00

  3. 25.10.2026 05:39:02 · GFZ · update

    magnitude: 6.2 → 6.5 magnitude type: M → Mw

  4. 25.10.2026 05:24:41 · SISTEM · recompute

    depth: 492.4 → 492.38 source count: 2 → 3 review status: automatic → reviewed magnitude type: mw → mww confirming sources: emsc,gfz → emsc,usgs,gfz preferred source: 3 → 4

  5. 25.10.2026 05:24:41 · EMSC · update

    depth: 497 → 492.4 latitude: 27.8188 → 27.7953 longitude: 139.6377 → 139.6184 magnitude: 6.3 → 6.5 time: 2026-10-25T02:09:24.690+00:00 → 2026-10-25T02:09:23.818+00:00 magnitude type: mb → mw

  6. 25.10.2026 05:24:41 · SISTEM · recompute

    depth: 497 → 492.4 latitude: 27.8188 → 27.7953 longitude: 139.6377 → 139.6184 magnitude: 6.3 → 6.5 time: 2026-10-25T02:09:24.690Z → 2026-10-25 02:09:23.818+00:00 magnitude type: mb → mw

  7. 25.10.2026 05:22:37 · EMSC · update

    latitude: 27.81 → 27.8188 longitude: 139.6551 → 139.6377 time: 2026-10-25T02:09:24.550+00:00 → 2026-10-25T02:09:24.690+00:00

  8. 25.10.2026 05:22:37 · SISTEM · recompute

    latitude: 27.81 → 27.8188 longitude: 139.6551 → 139.6377 time: 2026-10-25T02:09:24.550Z → 2026-10-25 02:09:24.690+00:00

  9. 25.10.2026 05:20:32 · GFZ · update

    depth: 486.5 → 483 latitude: 27.77 → 27.747 longitude: 139.632 → 139.639 magnitude: 6.3 → 6.2 time: 2026-10-25T02:09:24.060+00:00 → 2026-10-25T02:09:23.930+00:00 magnitude type: mb → M

  10. 25.10.2026 05:20:28 · EMSC · update

    latitude: 27.82 → 27.81 longitude: 139.6876 → 139.6551 time: 2026-10-25T02:09:24.320+00:00 → 2026-10-25T02:09:24.550+00:00

  11. 25.10.2026 05:20:28 · SISTEM · recompute

    latitude: 27.82 → 27.81 longitude: 139.6876 → 139.6551 time: 2026-10-25T02:09:24.320Z → 2026-10-25 02:09:24.550+00:00

  12. 25.10.2026 05:18:31 · GFZ · update

    depth: 488.9 → 486.5 latitude: 27.767 → 27.77 longitude: 139.616 → 139.632 time: 2026-10-25T02:09:24.090+00:00 → 2026-10-25T02:09:24.060+00:00

  13. 25.10.2026 05:18:21 · EMSC · update

    latitude: 27.816 → 27.82 longitude: 139.6813 → 139.6876 time: 2026-10-25T02:09:24.300+00:00 → 2026-10-25T02:09:24.320+00:00

  14. 25.10.2026 05:18:21 · SISTEM · recompute

    latitude: 27.816 → 27.82 longitude: 139.6813 → 139.6876 time: 2026-10-25T02:09:24.300Z → 2026-10-25 02:09:24.320+00:00

  15. 25.10.2026 05:17:22 · SISTEM · recompute

    depth: 488.9 → 497 latitude: 27.767 → 27.816 longitude: 139.616 → 139.6813 time: 2026-10-25T02:09:24.090Z → 2026-10-25 02:09:24.300+00:00 source count: 1 → 2 confirming sources: gfz → emsc,gfz preferred source: 5 → 3

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