M4.2 earthquake 7 km NNE of Naka, Japan
A magnitude 4.2 earthquake struck 7 km NNE of Naka, Japan on Sun, May 11, 1986, 5:47 PM JST (08:47 UTC), 87 km (54 mi) below the surface.
A larger quake followed: M4.7 near the south coast of Honshu, 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
- 1986-05-11 08:47:28 UTC
- Depth
- 86.9 km (54.0 mi), intermediate-depth
- Epicenter
- 36.112° N, 140.196° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (I JMA) at Mito.
From the USGS event page for usp0002tw3. U.S. Geological Survey text and figures are in the public domain.
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 3 in the 30 days before it.
After
- 4.24 km SSW of Shisui, Japan · 14731 days ago · 77 km deep · 48 km away
- 4.33 km NW of Kuroiso, Japan · 14702 days ago · 41 km deep · 99 km away
- 4.7near the south coast of Honshu, Japan · 14700 days ago · 152 km deep · 79 km away
- 4.510 km SE of Okunoya, Japan · 14694 days ago · 84 km deep · 31 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002tw3. Read Thu, Oct 1, 2026, 11:46 PM UTC.