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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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4.6

36 km E of Watari, Japan

5 November 2026, 21:05:43 (+03) 2026-11-05 18:05:43 UTC

3 sources: EMSC, USGS, GFZ mb
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Magnitude
4.6 mb
Depth
87.4 km
Coordinates
37.9934, 141.2636
Data consistency
89/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
6
Last 30 days
12

Approximate energy released

≈ 120 t TNT

5.01e+11 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

14 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 4
  • M4 9
  • M5 1
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 1
  • 20–40 km 1
  • 40–70 km 10
  • 70–150 km 2
  • 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

Sources report different values.
Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
NEAR EAST COAST OF HONSHU, JAPAN
 4.6 mb 80.0 km 18:05:41.880 Δt 1.49 sn · 18.04 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
36 km E of Watari, Japan
 4.6 mb 87.4 km 18:05:43.367 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Near East Coast of Honshu, Japan
 4.8 mb 71.9 km 18:05:41.200 Δt 2.17 sn · 27.44 km · ΔM +0.2 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. 06.11.2026 11:18:57 · EMSC · update

    depth: 87.4 → 80 latitude: 37.9934 → 37.8827 longitude: 141.2636 → 141.4138 time: 2026-11-05T18:05:43.367+00:00 → 2026-11-05T18:05:41.880+00:00

  2. 06.11.2026 00:29:31 · SISTEM · recompute

    depth: 87.4 → 87.44 source count: 2 → 3 review status: automatic → reviewed confirming sources: emsc,gfz → emsc,usgs,gfz preferred source: 3 → 4

  3. 06.11.2026 00:29:29 · EMSC · update

    depth: 80 → 87.4 latitude: 37.97 → 37.9934 longitude: 141.47 → 141.2636 magnitude: 4.7 → 4.6 time: 2026-11-05T18:05:42.100+00:00 → 2026-11-05T18:05:43.367+00:00

  4. 06.11.2026 00:29:29 · SISTEM · recompute

    depth: 80 → 87.4 latitude: 37.97 → 37.9934 longitude: 141.47 → 141.2636 magnitude: 4.7 → 4.6 time: 2026-11-05T18:05:42.100Z → 2026-11-05 18:05:43.367+00:00

  5. 05.11.2026 22:53:33 · EMSC · update

    magnitude: 4.5 → 4.7 magnitude type: m → mb

  6. 05.11.2026 22:53:33 · SISTEM · recompute

    magnitude: 4.5 → 4.7 magnitude type: m → mb

  7. 05.11.2026 22:52:33 · EMSC · update

    latitude: 37.8 → 37.97 longitude: 141.5 → 141.47 time: 2026-11-05T18:05:30.000+00:00 → 2026-11-05T18:05:42.100+00:00

  8. 05.11.2026 22:52:33 · SISTEM · recompute

    latitude: 37.8 → 37.97 longitude: 141.5 → 141.47 time: 2026-11-05T18:05:30.000Z → 2026-11-05 18:05:42.100+00:00

  9. 05.11.2026 21:20:48 · SISTEM · recompute

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

  10. 05.11.2026 21:18:39 · EMSC · update

    magnitude: 4.3 → 4.5

  11. 05.11.2026 21:18:39 · SISTEM · recompute

    magnitude: 4.3 → 4.5

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