M5.2 earthquake 123 km ESE of Yamada, Japan
A magnitude 5.2 earthquake struck 123 km ESE of Yamada, Japan on Sun, Jul 18, 1971, 4:29 AM JST (19:29 UTC), 33 km (20 mi) below the surface.
A larger quake followed: M6.0 137 km ESE of Yamada, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.2 (mw), moderate
- Local time
- UTC
- 1971-07-17 19:29:55 UTC
- Depth
- 32.5 km (20.2 mi), shallow
- Epicenter
- 39.215° N, 143.341° 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
- ±0.34
- 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: 1 in the 60 days after this one and 2 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 iscgem782402. Read Tue, Sep 22, 2026, 7:09 AM UTC.