| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 10.0 km |
| Coordinates | 37.285, 138.772 |
| UTC time | 2004-10-23 09:07:31.290 |
Earthquake details
Saturday, October 23, 2004 Earthquake
The earthquake hit Japan on Saturday, October 23, 2004 at 09:07 UTC with a magnitude of 5.4. The closest known location in the current dataset is Ojiya (Japan - JP), about 3.0 km away. The epicenter is located at longitude 138.772 and latitude 37.285.
| Location | Nagaoka |
| Country | Japan (JP) |
| Severity | Strong |
Earthquake map 2004-10-23
Closest countries
The 12 closest cities near the epicenter.
| Ojiya | 3.0 km |
| Tōkamachi | 16.9 km |
| Uonuma | 17.4 km |
| Nagaoka | 19.6 km |
| Kashiwazaki | 21.7 km |
| Minamiuonuma | 24.3 km |
| Muikamachi | 26.2 km |
| Mitsuke | 31.1 km |
| Sanjō | 40.1 km |
| Tsubame | 44.4 km |
| Jōetsu | 49.9 km |
| Maki | 52.7 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.8
Niigata
Japan · 2026-02-13 04:58 UTC
|
54.2 km |
|
M 4.3
Nagaoka
Japan · 2025-09-15 19:00 UTC
|
43.2 km |
|
M 4.2
Aizu-Wakamatsu
Japan · 2025-06-10 18:14 UTC
|
77.2 km |
Stay informed
Earthquake alerts
Create targeted notifications for important seismic activity near the places you follow.