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M3.6 earthquake 9 km W of Honmachi, Kumamoto, Japan

A magnitude 3.6 earthquake struck 9 km W of Honmachi, Kumamoto, Japan at 07:41 local time (22:41 UTC) on 15 Oct 2026, at a depth of 0 km, according to JMA. The solution is preliminary and may be revised.

Data: JMA · updated 2026-10-14 22:43 UTC · automatic solution

Magnitude
3.6minor
JMA magnitude (Mj)
Depth
0 km
Status
Automatic
Origin time
2026-10-14 22:41:00 UTC
Local: 15 Oct 2026, 07:41:00 (Asia/Tokyo)
Epicentre
32.500° N, 130.500° E

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
HonmachiKumamoto, Japan · pop. 123,0679 kmIVLight
Ōyanomachi-noboritateKumamoto, Japan · pop. 24,56313 kmIVLight
UkiKumamoto, Japan · pop. 59,92820 kmIIIWeak
MatsubaseKumamoto, Japan · pop. 26,16323 kmIIIWeak
KumamotoJapan · pop. 738,90739 kmIIWeak
KotōKumamoto, Japan · pop. 543,73039 kmIIWeak
NagasakiJapan · pop. 409,11864 kmINot felt
KurumeFukuoka, Japan · pop. 303,57991 kmINot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 29 km.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses JMA.

AgencyMagnitudeDepthEpicentreTime offsetStatus
JMAheadlineJMA via Japan Meteorological Agency3.6 Mj0 km32.50° N, 130.50° E–Automatic

How big was it?

Often felt by people at rest close to the epicentre, rarely causes damage.

It released roughly the energy of 3.8 t of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 0 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M3.6 releases about 32× the energy of M2.6, and its waves are about 10× taller on a seismogram. Energy: 3.8 t of TNT vs 120 kg of TNT.

Each square is the energy of one M2.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

31 later earthquakes within 30 km; the largest was M4.3 4 days ago. 12 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M3.6

31 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
16.532.510
34.602.510
72.582.910
80.933.010
87.082.510
95.552.310
100.952.710
168.072.910
194.832.60
200.372.710
285.131.80
289.222.110
295.853.010
321.602.710
328.223.010
329.382.410
378.074.110
389.852.410
391.633.010
407.482.80
425.673.110
433.882.510
435.273.00
462.482.110
479.782.510
576.703.010
579.204.310
579.672.810
589.102.00
638.702.510
686.032.110
  1. 4.34 km W of Wakasu, Kumamoto, Japan11-08 01:53
  2. 4.14 km NE of Uto, Kumamoto, Japan10-30 16:45
  3. 3.1Near Honmachi, Kumamoto, Japan11-01 16:21
  4. 3.04 km W of Wakasu, Kumamoto, Japan10-18 07:37
  5. 3.0Near Honmachi, Kumamoto, Japan10-27 06:32
  6. 3.04 km W of Wakasu, Kumamoto, Japan10-28 14:54
  7. 3.04 km ESE of Uki, Kumamoto, Japan10-31 06:19
  8. 3.011 km N of Sashiki, Kumamoto, Japan11-02 01:57
  9. 3.0Near Honmachi, Kumamoto, Japan11-07 23:23
  10. 2.99 km N of Minamata, Kumamoto, Japan10-17 23:16
  11. 2.911 km S of Honmachi, Kumamoto, Japan10-21 22:45
  12. 2.8Near Honmachi, Kumamoto, Japan10-31 22:10
  13. 2.84 km W of Wakasu, Kumamoto, Japan11-08 02:21
  14. 2.711 km N of Sashiki, Kumamoto, Japan10-19 03:38
  15. 2.79 km N of Minamata, Kumamoto, Japan10-23 07:03
  16. 2.715 km NW of Sashiki, Kumamoto, Japan10-28 08:17
  17. 2.611 km N of Sashiki, Kumamoto, Japan10-23 01:31
  18. 2.54 km NE of Uto, Kumamoto, Japan10-15 15:13
  19. 2.59 km N of Minamata, Kumamoto, Japan10-16 09:17
  20. 2.511 km N of Sashiki, Kumamoto, Japan10-18 13:46
  21. 2.5Near Sashiki, Kumamoto, Japan11-02 00:34
  22. 2.5Near Honmachi, Kumamoto, Japan11-03 22:28
  23. 2.5Near Sashiki, Kumamoto, Japan11-10 13:23
  24. 2.4Near Sashiki, Kumamoto, Japan10-28 16:04
  25. 2.4Near Sashiki, Kumamoto, Japan10-31 04:32

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id jma20261015074108. First recorded here 14 Oct 2026, 22:45:30 UTC. Solutions: JMA (jma:20261015074108). Cite as: SeismoAtlas, “M3.6 earthquake 9 km W of Honmachi, Kumamoto, Japan”, https://seismoatlas.com/earthquake/jma20261015074108-m3-6-earthquake-9-km-w-of-honmachi-kumamoto-japan, data from JMA.

JSON: /api/v1/events/jma20261015074108. SeismoAtlas is not an official warning service.