| Magnitude | 6.4 |
| Alert | Severe |
| Depth | 15.0 km |
| Coordinates | 33.381, 142.521 |
| UTC time | 1923-08-12 06:10:10.800 |
Earthquake details
Sunday, August 12, 1923 Earthquake
The earthquake hit Japan on Sunday, August 12, 1923 at 06:10 UTC with a magnitude of 6.4. The closest known location in the current dataset is Isumi (Japan - JP), about 283.2 km away. The epicenter is located at longitude 142.521 and latitude 33.381.
| Location | Chiba |
| Country | Japan (JP) |
| Severity | Severe |
Earthquake map 1923-08-12
Closest countries
The 12 closest cities near the epicenter.
| Isumi | 283.2 km |
| Kamogawa | 293.4 km |
| Minamibōsō | 301.3 km |
| Tateyama | 302.6 km |
| Hasaki | 304.1 km |
| Mobara | 305.9 km |
| Ōamishirasato | 309.6 km |
| Asahi | 311.5 km |
| Tōgane | 312.1 km |
| Ōami | 312.2 km |
| Yōkaichiba | 315.1 km |
| Sanmu | 315.9 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
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Matsudo
Japan · 2026-08-22 17:00 UTC
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Kamisu
Japan · 2026-07-17 19:45 UTC
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M 4.7
Narita
Japan · 2026-07-16 00:01 UTC
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M 4.3
Kamisu
Japan · 2026-07-02 07:17 UTC
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M 4.2
Chiba
Japan · 2026-06-26 18:59 UTC
343.1 km
M 4.3
Sakura
Japan · 2026-06-26 04:31 UTC
325.2 km
M 4.5
Asahi
Japan · 2026-06-26 04:00 UTC
293.0 km
M 5.8
Kamisu
Japan · 2026-06-26 03:46 UTC
312.5 km
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