M4.9 earthquake 114 km S of Koshima, Japan
A magnitude 4.9 earthquake struck 114 km S of Koshima, Japan on Fri, Jul 5, 1985, 9:46 AM JST (00:46 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1985-07-05 00:46:58 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 29.212° N, 130.707° 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 1.9 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.6101 km S of Koshima, Japan · 15055 days ago · 40 km deep · 15 km away
- 4.7120 km ENE of Naze, Japan · 15019 days ago · 80 km deep · 39 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002ger. Read Wed, Sep 23, 2026, 5:58 PM UTC.