M4.3 earthquake 73 km SE of ?hara, Japan
A magnitude 4.3 earthquake struck 73 km SE of ?hara, Japan on Mon, Apr 13, 1987, 1:17 AM JST (16:17 UTC), 26 km (16 mi) below the surface.
A larger quake followed: M4.9 26 km SE of Narut?, 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
- 1987-04-12 16:17:43 UTC
- Depth
- 26.2 km (16.3 mi), shallow
- Epicenter
- 34.865° N, 141.055° 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: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.926 km SE of Narut?, Japan · 14389 days ago · 74 km deep · 74 km away
- 4.7near the east coast of Honshu, Japan · 14377 days ago · 56 km deep · 39 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0003445. Read Tue, Sep 22, 2026, 12:16 PM UTC.