Skip to content
SeismoAtlas

M3.0 earthquake 9 km W of Honmachi, Kumamoto, Japan

A magnitude 3.0 earthquake struck 9 km W of Honmachi, Kumamoto, Japan at 14:58 local time (05:58 UTC) on 9 Sept 2026, at a depth of 10 km, according to JMA. The solution is preliminary and may be revised.

Data: JMA · updated 2026-09-09 06:00 UTC · automatic solution

Magnitude
3.0minor
JMA magnitude (Mj)
Depth
10 km
Status
Automatic
Origin time
2026-09-09 05:58:00 UTC
Local: 9 Sept 2026, 14:58:00 (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 kmIIIWeak
Ōyanomachi-noboritateKumamoto, Japan · pop. 24,56313 kmIIWeak
UkiKumamoto, Japan · pop. 59,92820 kmIIWeak
MatsubaseKumamoto, Japan · pop. 26,16323 kmIIWeak
KumamotoJapan · pop. 738,90739 kmINot felt
KotōKumamoto, Japan · pop. 543,73039 kmINot felt
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 12 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 Agency3.0 Mj10 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 477 kg 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 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M3.0 releases about 32× the energy of M2.0, and its waves are about 10× taller on a seismogram. Energy: 477 kg of TNT vs 15 kg of TNT.

Each square is the energy of one M2.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

31 later earthquakes within 30 km; the largest was M4.0 14 days ago. 16 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M3.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
17.282.90
19.372.510
26.283.10
35.182.510
53.682.610
100.322.310
124.634.00
136.273.010
156.932.610
174.621.00
195.432.30
198.903.210
199.702.910
203.102.520
221.602.310
227.022.810
232.002.510
232.832.510
239.102.710
293.672.00
298.683.50
305.483.010
318.882.510
330.483.310
367.673.010
367.802.710
386.102.00
410.122.10
412.732.60
416.932.20
447.522.810
  1. 4.011 km S of Honmachi, Kumamoto, Japan09-14 10:36
  2. 3.54 km ESE of Uki, Kumamoto, Japan09-21 16:39
  3. 3.34 km NE of Uto, Kumamoto, Japan09-23 00:27
  4. 3.24 km W of Wakasu, Kumamoto, Japan09-17 12:52
  5. 3.1Near Honmachi, Kumamoto, Japan09-10 08:15
  6. 3.0Near Honmachi, Kumamoto, Japan09-14 22:14
  7. 3.0Near Honmachi, Kumamoto, Japan09-21 23:27
  8. 3.0Near Honmachi, Kumamoto, Japan09-24 13:38
  9. 2.9Near Honmachi, Kumamoto, Japan09-09 23:15
  10. 2.94 km NE of Uto, Kumamoto, Japan09-17 13:40
  11. 2.84 km ESE of Uki, Kumamoto, Japan09-18 16:59
  12. 2.89 km W of Honmachi, Kumamoto, Japan09-27 21:29
  13. 2.74 km NE of Uto, Kumamoto, Japan09-19 05:04
  14. 2.74 km NE of Uto, Kumamoto, Japan09-24 13:46
  15. 2.611 km N of Sashiki, Kumamoto, Japan09-11 11:39
  16. 2.6Near Honmachi, Kumamoto, Japan09-15 18:54
  17. 2.6Near Honmachi, Kumamoto, Japan09-26 10:42
  18. 2.5Near Honmachi, Kumamoto, Japan09-10 01:20
  19. 2.511 km N of Sashiki, Kumamoto, Japan09-10 17:09
  20. 2.54 km NE of Uto, Kumamoto, Japan09-17 17:04
  21. 2.54 km NE of Uto, Kumamoto, Japan09-18 21:58
  22. 2.5Near Sashiki, Kumamoto, Japan09-18 22:48
  23. 2.5Near Sashiki, Kumamoto, Japan09-22 12:51
  24. 2.3Near Sashiki, Kumamoto, Japan09-13 10:17
  25. 2.311 km N of Sashiki, Kumamoto, Japan09-17 09:24

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 jma20260909145811. First recorded here 28 Sept 2026, 17:32:06 UTC. Solutions: JMA (jma:20260909145811). Cite as: SeismoAtlas, “M3.0 earthquake 9 km W of Honmachi, Kumamoto, Japan”, https://seismoatlas.com/earthquake/jma20260909145811-m3-0-earthquake-9-km-w-of-honmachi-kumamoto-japan, data from JMA.

JSON: /api/v1/events/jma20260909145811. SeismoAtlas is not an official warning service.