| Magnitude | 5.0 |
| Alert | Strong |
| Depth | 33.0 km |
| Coordinates | 34.006, 141.691 |
| UTC time | 1984-09-20 23:46:25.170 |
Earthquake details
Thursday, September 20, 1984 Earthquake
The earthquake hit Japan on Thursday, September 20, 1984 at 23:46 UTC with a magnitude of 5.0. The closest known location in the current dataset is Isumi (Japan - JP), about 180.1 km away. The epicenter is located at longitude 141.691 and latitude 34.006.
| Location | Tateyama |
| Country | Japan (JP) |
| Severity | Strong |
Earthquake map 1984-09-20
Closest countries
The 12 closest cities near the epicenter.
| Isumi | 180.1 km |
| Kamogawa | 189.8 km |
| Minamibōsō | 198.0 km |
| Tateyama | 199.6 km |
| Mobara | 203.2 km |
| Ōamishirasato | 207.6 km |
| Hasaki | 207.6 km |
| Ōami | 209.9 km |
| Tōgane | 210.2 km |
| Asahi | 212.8 km |
| Sanmu | 214.8 km |
| Yōkaichiba | 215.5 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.8
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M 4.5
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M 4.3
Chiba
Japan · 2026-05-23 03:34 UTC
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M 5.0
Chiba
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M 4.6
Chiba
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56.8 km
M 5.1
Chiba
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M 4.5
Chiba
Japan · 2025-10-01 19:26 UTC
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M 4.5
Chiba
Japan · 2025-08-15 10:39 UTC
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