| Magnitude | 5.7 |
| Alert | Strong |
| Depth | 10.0 km |
| Coordinates | 37.268, 138.866 |
| UTC time | 2004-10-23 08:59:37.350 |
Earthquake details
Saturday, October 23, 2004 Earthquake
The earthquake hit Japan on Saturday, October 23, 2004 at 08:59 UTC with a magnitude of 5.7. The closest known location in the current dataset is Ojiya (Japan - JP), about 6.8 km away. The epicenter is located at longitude 138.866 and latitude 37.268.
| Location | Nagaoka |
| Country | Japan (JP) |
| Severity | Strong |
Earthquake map 2004-10-23
Closest countries
The 12 closest cities near the epicenter.
| Ojiya | 6.8 km |
| Uonuma | 8.9 km |
| Tōkamachi | 17.4 km |
| Nagaoka | 20.3 km |
| Minamiuonuma | 20.7 km |
| Muikamachi | 22.5 km |
| Kashiwazaki | 30.1 km |
| Mitsuke | 30.1 km |
| Sanjō | 39.5 km |
| Tsubame | 44.4 km |
| Maki | 53.7 km |
| Shirone | 56.9 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.8
Niigata
Japan · 2026-02-13 04:58 UTC
|
55.3 km |
|
M 4.3
Nagaoka
Japan · 2025-09-15 19:00 UTC
|
44.7 km |
|
M 4.2
Aizu-Wakamatsu
Japan · 2025-06-10 18:14 UTC
|
70.2 km |
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