| Magnitude | 5.4 |
| Alert | Strong |
| Depth | 73.9 km |
| Coordinates | 34.778, 140.826 |
| UTC time | 1985-10-03 21:28:02.060 |
Earthquake details
Thursday, October 3, 1985 Earthquake
The earthquake hit Japan on Thursday, October 3, 1985 at 21:28 UTC with a magnitude of 5.4. The closest known location in the current dataset is Isumi (Japan - JP), about 63.3 km away. The epicenter is located at longitude 140.826 and latitude 34.778.
| Location | Mobara |
| Country | Japan (JP) |
| Severity | Strong |
Earthquake map 1985-10-03
Closest countries
The 12 closest cities near the epicenter.
| Isumi | 63.3 km |
| Kamogawa | 75.1 km |
| Mobara | 86.8 km |
| Minamibōsō | 86.8 km |
| Tateyama | 90.5 km |
| Ōamishirasato | 92.4 km |
| Ōami | 94.4 km |
| Tōgane | 95.6 km |
| Sanmu | 101.6 km |
| Sodegaura | 101.9 km |
| Yōkaichiba | 105.7 km |
| Kisarazu | 105.7 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
|
M 4.0
Tokyo
Japan · 2026-04-05 23:17 UTC
|
140.9 km |
|
M 4.9
Kashiwa
Japan · 2026-04-01 01:06 UTC
|
164.9 km |
|
M 4.1
Fujisawa
Japan · 2026-03-28 10:36 UTC
|
135.3 km |
|
M 4.4
Kamisu
Japan · 2026-02-26 11:55 UTC
|
81.1 km |
|
M 4.4
Isumi
Japan · 2026-02-19 08:24 UTC
|
63.9 km |
|
M 4.0
Kisarazu
Japan · 2026-02-10 16:12 UTC
|
41.5 km |
|
M 4.2
Saitama
Japan · 2026-02-06 15:58 UTC
|
169.7 km |
|
M 4.5
Sakura
Japan · 2026-02-05 00:19 UTC
|
95.6 km |
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