M3.9 earthquake 222 km SE of Shing?, Japan
A magnitude 3.9 earthquake struck 222 km SE of Shing?, Japan on Mon, Aug 3, 1987, 2:53 AM JST (17:53 UTC), 382 km (237 mi) below the surface.
A larger quake followed: M4.4 168 km SSW 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
- 3.9 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-08-02 17:53:46 UTC
- Depth
- 382.1 km (237.4 mi), deep
- Epicenter
- 32.435° N, 137.807° 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.
- Depth from
- FROM_LOCATION
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 1 in the 30 days before it.
After
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0003761. Read Thu, Oct 1, 2026, 11:01 PM UTC.