| Magnitude | 6.6 |
| Alert | Severe |
| Depth | 16.0 km |
| Coordinates | 37.226, 138.779 |
| UTC time | 2004-10-23 08:56:00.860 |
Earthquake details
Saturday, October 23, 2004 Earthquake
The earthquake hit Japan on Saturday, October 23, 2004 at 08:56 UTC with a magnitude of 6.6. The closest known location in the current dataset is Ojiya (Japan - JP), about 8.4 km away. The epicenter is located at longitude 138.779 and latitude 37.226.
| Location | Minamiuonuma |
| Country | Japan (JP) |
| Severity | Severe |
Earthquake map 2004-10-23
Closest countries
The 12 closest cities near the epicenter.
| Ojiya | 8.4 km |
| Tōkamachi | 10.4 km |
| Uonuma | 16.4 km |
| Minamiuonuma | 18.1 km |
| Muikamachi | 20.0 km |
| Kashiwazaki | 25.6 km |
| Nagaoka | 25.7 km |
| Mitsuke | 36.8 km |
| Sanjō | 46.0 km |
| Jōetsu | 48.9 km |
| Tsubame | 50.5 km |
| Myoko | 51.5 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.9
Maebashi
Japan · 2026-03-15 05:06 UTC
|
104.5 km |
|
M 4.8
Niigata
Japan · 2026-02-13 04:58 UTC
|
60.6 km |
|
M 4.6
Kiryū
Japan · 2025-10-26 03:04 UTC
|
86.3 km |
|
M 4.3
Nagaoka
Japan · 2025-09-15 19:00 UTC
|
49.6 km |
|
M 4.2
Aizu-Wakamatsu
Japan · 2025-06-10 18:14 UTC
|
79.1 km |
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