M4.2 earthquake 198 km S of ?yama, Japan
A magnitude 4.2 earthquake struck 198 km S of ?yama, Japan on Wed, Dec 11, 1985, 7:36 PM JST (10:36 UTC), 311 km (193 mi) below the surface.
A larger quake followed: M4.4 176 km S of ?yama, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-12-11 10:36:56 UTC
- Depth
- 310.8 km (193.1 mi), deep
- Epicenter
- 32.828° N, 137.946° 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.0210 km S of ?yama, Japan · 14883 days ago · 340 km deep · 14 km away
- 3.9165 km S of ?yama, Japan · 14882 days ago · 333 km deep · 36 km away
- 4.4176 km S of ?yama, Japan · 14874 days ago · 342 km deep · 22 km away
- 4.2231 km SE of Shing?, Japan · 14860 days ago · 375 km deep · 55 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002nrx. Read Thu, Oct 1, 2026, 1:55 PM UTC.