Earthquake · Reviewed by USGS
M4.1 earthquake 3 km WNW of Ogano, Japan
A magnitude 4.1 earthquake struck 3 km WNW of Ogano, Japan at Aug 23, 2025, 10:22 UTC, at a depth of 129 km. The epicentre was 11 km (7 mi) WNW of Chichibu.
Details
| Magnitude | 4.1 mb |
|---|---|
| Time | Aug 23, 2025, 10:22 UTC |
| Depth | 129.5 km |
| Coordinates | 36.035, 138.970 |
| Felt reports | 0 |
| Tsunami flag | None |
| Source | USGS event page |
02 — Around it
Other earthquakes within 100 km
| Magnitude | Location | Distance | Depth | Time |
|---|---|---|---|---|
| 4.5 | 2 km N of Honchō, Japan | 98 km / 61 mi | depth 90 km | |
| 4.6 | 9 km NNE of Midori, Japan | 63 km / 39 mi | depth 96 km | |
| 4.5 | 3 km ESE of Sugito, Japan | 71 km / 44 mi | depth 67 km | |
| 4.9 | 5 km S of Sakai, Japan | 74 km / 46 mi | depth 69 km | |
| 4.4 | 8 km NNE of Ishige, Japan | 94 km / 58 mi | depth 67 km | |
| 4.8 | 9 km E of Ishige, Japan | 99 km / 61 mi | depth 87 km | |
| 4.2 | 6 km N of Ashikaga, Japan | 58 km / 36 mi | depth 78 km | |
| 4.1 | 5 km WSW of Tsukuba, Japan | 98 km / 61 mi | depth 97 km | |
| 5.2 | 5 km W of Ōtsuki, Japan | 47 km / 29 mi | depth 35 km | |
| 4.3 | 0 km NNW of Noda, Japan | 81 km / 50 mi | depth 54 km | |
| 4.4 | 2 km WNW of Moriya, Japan | 91 km / 57 mi | depth 42 km | |
| 5.3 | 2 km SW of Koga, Japan | 67 km / 42 mi | depth 64 km | |
| 4.0 | 3 km W of Fussa, Japan | 43 km / 27 mi | depth 148 km | |
| 4.3 | 6 km SW of Oyama, Japan | 74 km / 46 mi | depth 75 km | |
| 4.4 | 4 km NW of Hachiōji, Japan | 48 km / 30 mi | depth 121 km | |
| 4.0 | 11 km E of Machida, Japan | 79 km / 49 mi | depth 139 km | |
| 4.8 | 4 km W of Iwai, Japan | 80 km / 49 mi | depth 54 km | |
| 4.9 | 1 km SW of Kiryū, Japan | 50 km / 31 mi | depth 96 km | |
| 4.1 | 2 km NNW of Tatebayashi, Japan | 56 km / 35 mi | depth 68 km | |
| 4.3 | 5 km N of Gyōda, Japan | 47 km / 29 mi | depth 104 km | |
| 4.2 | 0 km E of Hasuda, Japan | 62 km / 39 mi | depth 95 km | |
| 4.3 | 3 km SSW of Oyama, Japan | 78 km / 48 mi | depth 83 km | |
| 4.8 | 6 km WSW of Tsukuba, Japan | 97 km / 61 mi | depth 63 km | |
| 4.4 | 3 km NE of Chikusei, Japan | 99 km / 62 mi | depth 84 km | |
| 4.2 | 3 km SW of Ishige, Japan | 87 km / 54 mi | depth 84 km |
USGS can revise magnitude and location after the first report. See magnitude vs intensity and aftershocks.