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LOCAL EARTHQUAKE HISTORY

Omuta City earthquake and Shindo history

大牟田市

Earthquakes for which stations associated with Omuta City reported an actual Shindo observation.

Latest observation: Aug 24, 2026, 04:05 AM JST
Local seismic profile

Since May 27, 2015, stations associated with Omuta City have reported a local reading for 260 earthquakes. Shindo 1 was most common, while the highest local level, Shindo 4, was recorded 4 times.

Latest observationAug 24, 2026
Highest local Shindo4
Observed events260May 27, 2015Aug 24, 2026
Associated observation stations3JMA
Latest observation: Aug 24, 2026

Recent observed earthquakes

No local observation in the last 7 days. Latest observation: Aug 24, 2026

3 Associated observation stations

Stations and strongest local observations

The map combines stations assigned to this place with earthquakes that produced its strongest local readings.

Open this place on the map
Associated observation stationsStations: JMA observation catalogue · basemap: OpenFreeMap
May 27, 2015 to Aug 24, 2026 · 4 records

Observation history

This history counts earthquakes observed at stations in the place, not earthquakes whose epicentre lies inside its boundary. Counts can change as stations are updated and older or corrected observations are added.

All years · Shindo 4+ · Clear filters
First observation: May 27, 2015

Observed events by year

Choose a year to update the event history and local Shindo distribution.

All years
All years

Shindo observed in this place

The highest reading from stations in this place, not the maximum Shindo of the whole event.

All Shindo
1187256313445−05+06−06+070
Reference model · not a forecast

Ground & J-SHIS

A change in the number of observations cannot by itself predict a larger earthquake.

Local seismic profile

Where the shaking usually comes from

Source regions of earthquakes observed here, ordered by the number of reports.

4
Kumamoto Region, Kumamoto Prefecture熊本県熊本地方
173
2
Ariake Sea有明海
19
2
Amakusa and Ashikita Region, Kumamoto Prefecture熊本県天草・芦北地方
17
3
Aso Region, Kumamoto Prefecture熊本県阿蘇地方
15
3
Chikugo Region, Fukuoka Prefecture福岡県筑後地方
11
3
Hyuganada Sea日向灘
10
Local seismic profile

Recent observations in long-term context

Latest calendar year432026
Average completed year19.711
Shindo 3 or higher17Shindo ≥ 3

A change in the number of observations cannot by itself predict a larger earthquake.

Reference model · not a forecast J-SHIS (NIED) · 250 m · 4930433542

Ground conditions near an observation station

J-SHIS data for the 250 m mesh containing 大牟田市笹林.

J-SHIS / NIED

How to read these values

Landform classDelta and coastal lowland三角州・海岸低地

A landform class assigned to the whole 250 m mesh and used to estimate AVS30. The name alone does not determine safety, and it is model data rather than a borehole survey at the station.

AVS30207.5 m/s

The average speed of an S-wave through the upper 30 metres. A lower value generally indicates softer material that can amplify shaking more. J-SHIS uses this value to estimate the amplification shown to the right. It is not predicted Shindo.

Surface velocity amplification×1.75

For the same incoming wave, local ground conditions may make peak-motion velocity at the surface about 75% higher than at engineering bedrock (Vs = 400 m/s). This value describes motion velocity—it does not multiply magnitude or forecast ground acceleration.

Ground conditions can change over short distances. These values do not rate the whole place or the safety of a building, and they cannot predict an earthquake. Source: J-SHIS (NIED), V4 model; processed for presentation by JISHINDESU.

Reference model · not a forecast J-SHIS (NIED) · A40202

Earthquake scenarios affecting this place

Official J-SHIS models ranked for their potential impact on this municipality.

J-SHIS / NIED

#1 means the model ranks highest in the J-SHIS result for this place under the same settings. It is not a ranking of which earthquake will happen next.

Magnitude on a card describes the size of the whole earthquake model, not the Shindo expected here. Local shaking also depends on distance, depth and ground conditions.

J-SHIS 2020 model, 30-year period and Shindo 6-lower threshold. This is not a prediction of a particular earthquake. Source: J-SHIS (NIED); processed for presentation by JISHINDESU.

Local seismic profile

Nearby places

Municipalities nearest to the representative station position.