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SeismoAtlas

M2.7 earthquake 5 km NNE of Shimada, Kumamoto, Japan

A magnitude 2.7 earthquake struck 5 km NNE of Shimada, Kumamoto, Japan at 11:32 local time (02:32 UTC) on 1 Sept 2026, at a depth of 10 km, according to JMA. The solution is preliminary and may be revised.

Data: JMA · updated 2026-09-01 02:35 UTC · automatic solution

Magnitude
2.7micro
JMA magnitude (Mj)
Depth
10 km
Status
Automatic
Origin time
2026-09-01 02:32:00 UTC
Local: 1 Sept 2026, 11:32:00 (Asia/Tokyo)
Epicentre
32.800° N, 130.800° 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
ShimadaKumamoto, Japan · pop. 32,5105 kmIIIWeak
KotōKumamoto, Japan · pop. 543,7305 kmIIIWeak
OkinoKumamoto, Japan · pop. 43,3378 kmIIWeak
KōshiKumamoto, Japan · pop. 61,77210 kmIIWeak
KumamotoJapan · pop. 738,90710 kmIIWeak
KurumeFukuoka, Japan · pop. 303,57963 kmINot felt
NagasakiJapan · pop. 409,11886 kmINot felt
ŌitaOita, Japan · pop. 477,71589 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 6 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 Agency2.7 Mj10 km32.80° N, 130.80° E–Automatic

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 169 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.

M2.7 releases about 32× the energy of M1.7, and its waves are about 10× taller on a seismogram. Energy: 169 kg of TNT vs 5 kg of TNT.

Each square is the energy of one M1.7. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

22 later earthquakes within 30 km; the largest was M4.5 2 days ago. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.483.210
7.202.710
11.852.70
45.202.510
53.352.110
75.752.910
229.332.310
238.582.810
394.333.210
395.132.910
398.532.520
422.452.810
427.432.510
434.532.710
485.752.310
494.123.50
525.923.310
563.232.710
581.532.00
598.984.510
599.182.910
599.823.610
  1. 4.55 km NNE of Shimada, Kumamoto, Japan09-26 01:31
  2. 3.65 km NNE of Shimada, Kumamoto, Japan09-26 02:21
  3. 3.54 km ESE of Uki, Kumamoto, Japan09-21 16:39
  4. 3.34 km NE of Uto, Kumamoto, Japan09-23 00:27
  5. 3.24 km W of Wakasu, Kumamoto, Japan09-01 03:01
  6. 3.24 km W of Wakasu, Kumamoto, Japan09-17 12:52
  7. 2.94 km ESE of Uki, Kumamoto, Japan09-04 06:17
  8. 2.94 km NE of Uto, Kumamoto, Japan09-17 13:40
  9. 2.95 km NNE of Shimada, Kumamoto, Japan09-26 01:43
  10. 2.8Near Mifune, Kumamoto, Japan09-11 01:07
  11. 2.84 km ESE of Uki, Kumamoto, Japan09-18 16:59
  12. 2.74 km W of Wakasu, Kumamoto, Japan09-01 09:44
  13. 2.74 km ESE of Uki, Kumamoto, Japan09-01 14:23
  14. 2.74 km NE of Uto, Kumamoto, Japan09-19 05:04
  15. 2.74 km NE of Uto, Kumamoto, Japan09-24 13:46
  16. 2.55 km NNE of Shimada, Kumamoto, Japan09-02 23:44
  17. 2.54 km NE of Uto, Kumamoto, Japan09-17 17:04
  18. 2.54 km NE of Uto, Kumamoto, Japan09-18 21:58
  19. 2.3Near Mifune, Kumamoto, Japan09-10 15:52
  20. 2.3Near Mifune, Kumamoto, Japan09-21 08:17
  21. 2.14 km ESE of Uki, Kumamoto, Japan09-03 07:53
  22. 2.04 km ESE of Uki, Kumamoto, Japan09-25 08:04

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 jma20260901113249. First recorded here 28 Sept 2026, 17:32:06 UTC. Solutions: JMA (jma:20260901113249). Cite as: SeismoAtlas, “M2.7 earthquake 5 km NNE of Shimada, Kumamoto, Japan”, https://seismoatlas.com/earthquake/jma20260901113249-m2-7-earthquake-5-km-nne-of-shimada-kumamoto-japan, data from JMA.

JSON: /api/v1/events/jma20260901113249. SeismoAtlas is not an official warning service.