| 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.
|
M 4.0
Tokyo
Japan · 2026-04-05 23:17 UTC
|
77.0 km |
|
M 4.9
Kashiwa
Japan · 2026-04-01 01:06 UTC
|
17.2 km |
|
M 4.9
Maebashi
Japan · 2026-03-15 05:06 UTC
|
74.0 km |
|
M 4.1
Ōta
Japan · 2026-02-15 02:52 UTC
|
51.7 km |
|
M 4.3
Ōta
Japan · 2026-02-09 12:27 UTC
|
55.4 km |
|
M 4.2
Saitama
Japan · 2026-02-06 15:58 UTC
|
38.6 km |
|
M 4.5
Sakura
Japan · 2026-02-05 00:19 UTC
|
67.1 km |
|
M 4.1
Hasaki
Japan · 2026-02-03 18:36 UTC
|
96.9 km |
Stay informed
Earthquake alerts
Create targeted notifications for important seismic activity near the places you follow.