Earthquakes by city Japan 100 km
Seismic city profile

Koga

Koga, Japan: 63 earthquakes of magnitude 4.0+ detected within 100 km.

Population
58,786
Residents in the indexed city record.
Earthquakes
63
Earthquakes at M4.0+ nearby.
Max magnitude
6.6
Strongest recorded event in the current radius.
Timezone
Asia/Tokyo
Coordinates 33.733, 130.467
Nearby activity pulse
Last 30 days
0
Last 12 months
2
Last nearby event: 2025-11-25 09:01 UTC
Strongest nearby event
M 6.6
JP
2005-03-20 01:53 UTC

Map

Earthquakes within 100 km of Koga

The map centers on Koga and highlights the most recent earthquakes detected within 100 km.

Average magnitude
4.7
Average depth
22.0 km

Timeline

Recent seismic activity

Latest 25 events shown
UTC Magnitude Region Depth
2025-11-25 09:01 M 5.3 Kumamoto
Japan
10.0 km
2025-08-06 23:47 M 4.9
Yufu
Japan
9.8 km
2023-02-17 10:38 M 4.4
Munakata
Japan
10.0 km
2019-01-26 05:16 M 4.4
Omuta
Japan
10.0 km
2019-01-03 09:10 M 4.7
Omuta
Japan
10.0 km
2018-07-08 18:53 M 4.4
Saga
Japan
10.0 km
2017-06-09 14:36 M 4.7
Isahaya
Japan
11.9 km
2016-11-18 01:19 M 4.1
Itoshima
Japan
10.0 km
2016-08-19 02:05 M 4.2
Kōshi
Japan
10.0 km
2016-07-18 21:22 M 4.3
Ube
Japan
123.4 km
2016-05-05 01:40 M 4.6
Kikuchi
Japan
13.7 km
2016-05-05 01:31 M 4.6
Kōshi
Japan
16.8 km
2016-04-29 06:09 M 4.2
Beppu
Japan
2.4 km
2016-04-18 21:20 M 4.3
Ōzu
Japan
10.0 km
2016-04-18 11:42 M 5.5 Kumamoto
Japan
10.5 km
2016-04-17 04:14 M 4.3
Kōshi
Japan
10.0 km
2016-04-16 18:30 M 4.2
Kikuchi
Japan
15.9 km
2016-04-16 15:14 M 4.7
Kōshi
Japan
10.0 km
2016-04-16 13:05 M 4.5
Kumamoto
Japan
10.0 km
2016-04-15 22:11 M 5.1 Ōita
Japan
10.0 km
2016-04-15 21:40 M 4.5
Kōshi
Japan
10.0 km
2016-04-15 19:24 M 4.6
Kōshi
Japan
13.2 km
2016-04-15 19:01 M 4.6
Yufu
Japan
10.0 km
2016-04-15 18:20 M 4.5
Kikuchi
Japan
19.8 km
2016-04-15 18:16 M 4.5
Kōshi
Japan
19.0 km

Monthly profile

Recent monthly trend

2025-08 1 events
2025-11 1 events

Historic snapshot

Earthquakes history

Year Max magnitude Earthquakes