M6.2 earthquake 51 km S of Yonakuni, Japan
A magnitude 6.2 earthquake struck 51 km S of Yonakuni, Japan on Wed, Mar 23, 1966, 9:04 AM JST (00:04 UTC), 45 km (28 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.2 (mw), strong
- Local time
- UTC
- 1966-03-23 00:04:35 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 24.006° N, 122.958° E
- Region
- Japan
- Strongest shaking
- V, moderate shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- V, moderate shaking
- Peak ground acceleration
- 5.1% of gravity
- Peak ground velocity
- 1.3 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 6.246 km WSW of Yonakuni, Japan · 22055 days ago · 50 km deep · 45 km away
- 5.574 km SSW of Yonakuni, Japan · 22054 days ago · 21 km deep · 26 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem849501. Read Tue, Sep 22, 2026, 9:12 AM UTC.