M4.8 earthquake 50 km N of Yonakuni, Japan
A magnitude 4.8 earthquake struck 50 km N of Yonakuni, Japan on Mon, May 19, 1986, 4:33 AM JST (19:33 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 44 km N of Yonakuni, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1986-05-18 19:33:33 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 24.917° N, 123.052° 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
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 2 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.841 km N of Yonakuni, Japan · 14705 days ago · 33 km deep · 11 km away
- 5.044 km N of Yonakuni, Japan · 14687 days ago · 33 km deep · 12 km away
Before
- 4.576 km NE of Yonakuni, Japan · 14749 days ago · 72 km deep · 49 km away
- 4.339 km WNW of Yonakuni, Japan · 14763 days ago · 29 km deep · 53 km away
- 4.515 km N of Yonakuni, Japan · 14764 days ago · 33 km deep · 35 km away
- 4.011 km ESE of Yonakuni, Japan · 14764 days ago · 33 km deep · 53 km away
- 5.162 km NE of Yonakuni, Japan · 14765 days ago · 33 km deep · 36 km away
- 5.054 km NE of Yonakuni, Japan · 14765 days ago · 29 km deep · 34 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002u5f. Read Tue, Sep 22, 2026, 8:56 AM UTC.