| Magnitude | 5.5 |
| Alert | Strong |
| Depth | 47.0 km |
| Coordinates | 33.956, 142.287 |
| UTC time | 1978-08-15 12:55:19.200 |
Earthquake details
Tuesday, August 15, 1978 Earthquake
The earthquake hit Japan on Tuesday, August 15, 1978 at 12:55 UTC with a magnitude of 5.5. The closest known location in the current dataset is Isumi (Japan - JP), about 223.3 km away. The epicenter is located at longitude 142.287 and latitude 33.956.
| Location | Chiba |
| Country | Japan (JP) |
| Severity | Strong |
Earthquake map 1978-08-15
Closest countries
The 12 closest cities near the epicenter.
| Isumi | 223.3 km |
| Kamogawa | 237.4 km |
| Hasaki | 238.3 km |
| Mobara | 244.9 km |
| Asahi | 246.5 km |
| Minamibōsō | 247.4 km |
| Ōamishirasato | 247.6 km |
| Tōgane | 249.7 km |
| Tateyama | 249.8 km |
| Ōami | 250.3 km |
| Yōkaichiba | 250.8 km |
| Sōsa | 251.9 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.0
Tokyo
Japan · 2026-04-05 23:17 UTC
|
303.1 km |
|
M 4.9
Kashiwa
Japan · 2026-04-01 01:06 UTC
|
319.3 km |
|
M 4.1
Fujisawa
Japan · 2026-03-28 10:36 UTC
|
292.3 km |
|
M 4.4
Isumi
Japan · 2026-02-19 08:24 UTC
|
226.1 km |
|
M 4.1
Ōta
Japan · 2026-02-15 02:52 UTC
|
359.8 km |
|
M 4.3
Ōta
Japan · 2026-02-09 12:27 UTC
|
357.9 km |
|
M 4.2
Saitama
Japan · 2026-02-06 15:58 UTC
|
327.9 km |
|
M 4.5
Sakura
Japan · 2026-02-05 00:19 UTC
|
247.9 km |
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