M4.7 earthquake 50 km E of ?arai, Japan
A magnitude 4.7 earthquake struck 50 km E of ?arai, Japan on Fri, May 2, 1986, 9:37 AM JST (00:37 UTC), 44 km (27 mi) below the surface.
A larger quake followed: M5.2 85 km E of Iwaki, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1986-05-02 00:37:45 UTC
- Depth
- 43.8 km (27.2 mi), shallow
- Epicenter
- 36.342° N, 141.141° 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, Choshi and Fukushima.
From the USGS event page for usp0002tdv. 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.
How well it is located
Reviewed by a seismologist.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.856 km E of ?arai, Japan · 14766 days ago · 42 km deep · 6 km away
- 4.852 km ESE of Iwaki, Japan · 14762 days ago · 77 km deep · 71 km away
- 4.27 km NNE of Naka, Japan · 14756 days ago · 87 km deep · 89 km away
- 5.285 km E of Iwaki, Japan · 14753 days ago · 33 km deep · 95 km away
- 4.987 km E of ?arai, Japan · 14753 days ago · 33 km deep · 38 km away
- 4.879 km ESE of Iwaki, Japan · 14713 days ago · 46 km deep · 81 km away
- 4.154 km E of Iwaki, Japan · 14711 days ago · 54 km deep · 90 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002tdv. Read Sun, Oct 4, 2026, 8:09 PM UTC.