| Magnitude | 5.1 |
| Alert | Strong |
| Depth | 85.1 km |
| Coordinates | 36.099, 140.059 |
| UTC time | 1984-02-21 11:51:52.500 |
Earthquake details
Tuesday, February 21, 1984 Earthquake
The earthquake hit Japan on Tuesday, February 21, 1984 at 11:51 UTC with a magnitude of 5.1. The closest known location in the current dataset is Tsukuba (Japan - JP), about 5.5 km away. The epicenter is located at longitude 140.059 and latitude 36.099.
| Location | Tsukuba |
| Country | Japan (JP) |
| Severity | Strong |
Earthquake map 1984-02-21
Closest countries
The 12 closest cities near the epicenter.
| Tsukuba | 5.5 km |
| Naka | 11.1 km |
| Jōsō | 11.3 km |
| Mitsukaidō | 11.4 km |
| Shimo-tsuma | 12.5 km |
| Tsukubamirai | 13.5 km |
| Tsuchiura | 13.7 km |
| Ami | 14.6 km |
| Iwai | 15.3 km |
| Ushiku | 16.2 km |
| Bandō | 17.6 km |
| Kasumigaura | 17.9 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
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Kamisu
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Narita
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Japan · 2026-06-26 04:31 UTC
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Japan · 2026-06-26 04:00 UTC
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