M4.6 earthquake 74 km SW of Yonakuni, Japan
A magnitude 4.6 earthquake struck 74 km SW of Yonakuni, Japan on Tue, Jan 6, 1981, 7:05 AM GMT+8 (23:05 UTC), 37 km (23 mi) below the surface.
A larger quake followed: M5.6 32 km SE of Yilan, Taiwan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1981-01-05 23:05:29 UTC
- Depth
- 37.0 km (23.0 mi), shallow
- Epicenter
- 23.993° N, 122.483° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Stations used
- 19
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.817 km ESE of Hualien City, Taiwan · 16686 days ago · 55 km deep · 74 km away
- 5.632 km SE of Yilan, Taiwan · 16681 days ago · 33 km deep · 80 km away
- 5.475 km SSE of Yonakuni, Japan · 16669 days ago · 41 km deep · 92 km away
- 4.719 km SSE of Yilan, Taiwan · 16653 days ago · 71 km deep · 94 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001bm5. Read Thu, Oct 1, 2026, 2:47 PM UTC.