M3.9 earthquake 53 km E of ?arai, Japan
A magnitude 3.9 earthquake struck 53 km E of ?arai, Japan on Wed, Oct 10, 1973, 8:21 PM JST (11:21 UTC), 48 km (30 mi) below the surface.
A larger quake followed: M4.7 15 km SSE of Asahi, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.9 (mb), minor
- Local time
- UTC
- 1973-10-10 11:21:40 UTC
- Depth
- 48.0 km (29.8 mi), shallow
- Epicenter
- 36.359° N, 141.172° 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.
- Stations used
- 12
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.715 km SSE of Asahi, Japan · 19329 days ago · 60 km deep · 96 km away
- 4.013 km SSW of Hasaki, Japan · 19329 days ago · 53 km deep · 89 km away
- 4.915 km SSE of Asahi, Japan · 19322 days ago · 57 km deep · 93 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003sj. Read Tue, Sep 22, 2026, 8:52 PM UTC.