M4.3 earthquake 187 km SE of Shing?, Japan
A magnitude 4.3 earthquake struck 187 km SE of Shing?, Japan on Sat, Oct 4, 1986, 5:09 AM JST (20:09 UTC), 371 km (231 mi) below the surface.
A larger quake followed: M5.4 257 km SE of Shing?, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1986-10-03 20:09:38 UTC
- Depth
- 371.2 km (230.7 mi), deep
- Epicenter
- 32.708° N, 137.585° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 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 usp0002ynh. Read Tue, Sep 22, 2026, 9:15 PM UTC.