M5.8 earthquake 36 km SSW of Yonakuni, Japan
A magnitude 5.8 earthquake struck 36 km SSW of Yonakuni, Japan on Wed, Sep 27, 1950, 4:06 AM GMT+9 (19:06 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M5.9 39 km ENE of Hualien City, Taiwan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.8 (mw), moderate
- Local time
- UTC
- 1950-09-26 19:06:10 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 24.157° N, 122.875° 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
- 6.1% of gravity
- Peak ground velocity
- 1.4 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
- ±0.31
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.8 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem895865. Read Wed, Sep 30, 2026, 12:27 AM UTC.