6 km N of Asahi, Japan
28 October 2026, 21:32:23 (+03) 2026-10-28 18:32:23 UTC
- Magnitude
- 4.7 mb
- Depth
- 41.5 km
- Coordinates
- 35.7763, 140.6463
- Data consistency
- 88/100
Regional activity (100 km)
- Last 24 hours
- 0
- Last 7 days
- 4
- Last 30 days
- 15
Approximate energy released
≈ 169 t TNT
7.08e+11 J
Approximated with the Gutenberg–Richter relation (log E = 1.5 M + 4.8); depends on magnitude type. Gutenberg & Richter (1956).
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Community reports
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- Community intensity
- Typical duration
- Farthest report
- felt it
Estimated, close to the MMI scale
Intensity distribution
Provinces with reports
Reported effects
Squares on the map show community reports (~11 km grid; colour = estimated intensity).
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
17 earthquakes
By magnitude
- M0 0
- M1 0
- M2 0
- M3 6
- M4 8
- M5 3
- M6 0
- M7 0
- M8+ 0
By depth
- 0–10 km 0
- 10–20 km 1
- 20–40 km 4
- 40–70 km 9
- 70–150 km 3
- 150+ km 0
Largest previous earthquakes within 100 km
Largest earthquakes in the platform catalogue and entries from historical catalogues (with citation).
- M5,5 5 km ESE of Asahi, Japan 28.10.2026 · 10 km
- M5,4 Near East Coast of Honshu, Japan 28.10.2026 · 12 km
- M4,7 6 km ESE of Tōgane, Japan 11.10.2026 · 33 km
- M4,5 2 km N of Honchō, Japan 21.10.2026 · 60 km
- M4,0 NEAR S. COAST OF HONSHU, JAPAN 21.10.2026 · 60 km
- M3,8 NEAR EAST COAST OF HONSHU, JAPAN 27.09.2026 · 10 km
- M3,2 NEAR EAST COAST OF HONSHU, JAPAN 15.10.2026 · 53 km
- M3,1 NEAR EAST COAST OF HONSHU, JAPAN 26.10.2026 · 6 km
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
|
4.7 mb | 37.0 km | 18:32:22.940 | Δt 0.6 sn · 9.51 km · ΔM 0 | Original record |
|
USGS Earthquake Hazards Program
Displayed
6 km N of Asahi, Japan
|
4.7 mb | 41.5 km | 18:32:23.536 | 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
-
29.10.2026 10:38:09 · EMSC · update
depth: 41.5 → 37 latitude: 35.7763 → 35.7063 longitude: 140.6463 → 140.707 time: 2026-10-28T18:32:23.536+00:00 → 2026-10-28T18:32:22.940+00:00
-
29.10.2026 00:49:39 · SISTEM · recompute
depth: 41.5 → 41.49 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4
-
29.10.2026 00:49:38 · EMSC · update
depth: 34.3 → 41.5 latitude: 35.62 → 35.7763 longitude: 140.826 → 140.6463 magnitude: 4.4 → 4.7 time: 2026-10-28T18:32:22.570+00:00 → 2026-10-28T18:32:23.536+00:00 magnitude type: m → mb
-
29.10.2026 00:49:38 · SISTEM · recompute
depth: 34.3 → 41.5 latitude: 35.62 → 35.7763 longitude: 140.826 → 140.6463 magnitude: 4.4 → 4.7 time: 2026-10-28T18:32:22.570Z → 2026-10-28 18:32:23.536+00:00 magnitude type: m → mb
-
28.10.2026 22:56:38 · EMSC · update
depth: 50 → 34.3 latitude: 35.97 → 35.62 longitude: 140.51 → 140.826 time: 2026-10-28T18:32:26.800+00:00 → 2026-10-28T18:32:22.570+00:00
-
28.10.2026 22:56:38 · SISTEM · recompute
depth: 50 → 34.3 latitude: 35.97 → 35.62 longitude: 140.51 → 140.826 time: 2026-10-28T18:32:26.800Z → 2026-10-28 18:32:22.570+00:00
-
28.10.2026 22:22:32 · EMSC · update
latitude: 35.7 → 35.97 longitude: 140.7 → 140.51 time: 2026-10-28T18:32:30.000+00:00 → 2026-10-28T18:32:26.800+00:00
-
28.10.2026 22:22:32 · SISTEM · recompute
latitude: 35.7 → 35.97 longitude: 140.7 → 140.51 time: 2026-10-28T18:32:30.000Z → 2026-10-28 18:32:26.800+00:00
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