M5.9 earthquake 19 km W of Tenn?, Japan
A magnitude 5.9 earthquake struck 19 km W of Tenn?, Japan on Mon, May 1, 1939, 8:50 PM JST (11:50 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M6.6 18 km WNW of Tenn?, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.9 (mw), moderate
- Local time
- UTC
- 1939-05-01 11:50:34 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 39.911° N, 139.734° 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
- ±0.36
- 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: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem901922. Read Tue, Sep 22, 2026, 7:05 AM UTC.