M7.2 earthquake 28 km W of Tenn?, Japan
A magnitude 7.2 earthquake struck 28 km W of Tenn?, Japan on Mon, May 1, 1939, 2:58 PM JST (05:58 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 7.2 (mw), major
- Local time
- UTC
- 1939-05-01 05:58:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 39.930° N, 139.637° E
- Region
- Japan
- Strongest shaking
- VII, very strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VII, very strong shaking
- Peak ground acceleration
- 32.4% of gravity
- Peak ground velocity
- 3.7 cm/s
- Map
- Automatic
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
- ±0.51
- 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: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem901919. Read Tue, Sep 22, 2026, 5:28 PM UTC.