| Magnitude | 6.1 |
| Alert | Severe |
| Depth | 10.5 km |
| Coordinates | 37.318, 138.816 |
| UTC time | 2004-10-23 09:03:12.530 |
Earthquake details
Saturday, October 23, 2004 Earthquake
The earthquake hit Japan on Saturday, October 23, 2004 at 09:03 UTC with a magnitude of 6.1. The closest known location in the current dataset is Ojiya (Japan - JP), about 2.5 km away. The epicenter is located at longitude 138.816 and latitude 37.318.
| Location | Nagaoka |
| Country | Japan (JP) |
| Severity | Severe |
Earthquake map 2004-10-23
Closest countries
The 12 closest cities near the epicenter.
| Ojiya | 2.5 km |
| Nagaoka | 15.0 km |
| Uonuma | 15.3 km |
| Tōkamachi | 21.0 km |
| Kashiwazaki | 24.2 km |
| Mitsuke | 26.1 km |
| Minamiuonuma | 26.7 km |
| Muikamachi | 28.6 km |
| Sanjō | 35.3 km |
| Tsubame | 39.8 km |
| Maki | 48.5 km |
| Shirone | 52.8 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.8
Niigata
Japan · 2026-02-13 04:58 UTC
|
50.1 km |
|
M 4.3
Nagaoka
Japan · 2025-09-15 19:00 UTC
|
39.2 km |
|
M 4.2
Aizu-Wakamatsu
Japan · 2025-06-10 18:14 UTC
|
72.4 km |
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