M5.2 earthquake 145 km SSE of Koshima, Japan
A magnitude 5.2 earthquake struck 145 km SSE of Koshima, Japan on Tue, Mar 17, 1981, 2:21 PM JST (05:21 UTC), 45 km (28 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.2 (mw), moderate
- Local time
- UTC
- 1981-03-17 05:21:16 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 28.996° N, 131.024° 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.2 and up: 0 in the 60 days after this one and 2 in the 30 days before it.
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgemsup629994. Read Tue, Sep 22, 2026, 4:51 PM UTC.