M7.0 earthquake 122 km SSE of Koshima, Japan
A magnitude 7.0 earthquake struck 122 km SSE of Koshima, Japan on Sun, Mar 22, 1942, 8:20 AM JST (23:20 UTC), 25 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 7.0 (mw), major
- Local time
- UTC
- 1942-03-21 23:20:46 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 29.164° N, 130.834° 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
- ±0.45
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem900233. Read Tue, Sep 22, 2026, 7:26 AM UTC.