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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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4.2

37 km E of Hachinohe, Japan

26 October 2026, 07:12:25 (+03) 2026-10-26 04:12:25 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.2 mb
Depth
59.6 km
Coordinates
40.5558, 141.9305
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
1
Last 30 days
8

Approximate energy released

≈ 30 t TNT

1.26e+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

8 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 1
  • M4 6
  • M5 1
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 0
  • 20–40 km 3
  • 40–70 km 5
  • 70–150 km 0
  • 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
NEAR EAST COAST OF HONSHU, JAPAN
 4.2 mb 60.0 km 04:12:25.300 Δt 0.08 sn · 2.42 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
37 km E of Hachinohe, Japan
 4.2 mb 59.6 km 04:12:25.224 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. 26.10.2026 10:39:23 · EMSC · update

    depth: 59.6 → 60 latitude: 40.5558 → 40.5341 longitude: 141.9305 → 141.9285 magnitude: 3.9 → 4.2 time: 2026-10-26T04:12:25.224+00:00 → 2026-10-26T04:12:25.300+00:00 magnitude type: m → mb

  2. 26.10.2026 07:29:18 · SISTEM · recompute

    depth: 59.6 → 59.57 magnitude: 3.9 → 4.2 source count: 1 → 2 review status: automatic → reviewed magnitude type: m → mb confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  3. 26.10.2026 07:29:17 · EMSC · update

    depth: 50 → 59.6 latitude: 40.4 → 40.5558 longitude: 142.2 → 141.9305 time: 2026-10-26T04:12:30.000+00:00 → 2026-10-26T04:12:25.224+00:00

  4. 26.10.2026 07:29:17 · SISTEM · recompute

    depth: 50 → 59.6 latitude: 40.4 → 40.5558 longitude: 142.2 → 141.9305 time: 2026-10-26T04:12:30.000Z → 2026-10-26 04:12:25.224+00:00

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