M4.6 earthquake 56 km ESE of ?hara, Japan
A magnitude 4.6 earthquake struck 56 km ESE of ?hara, Japan on Sat, Jan 20, 1973, 10:06 PM JST (13:06 UTC), 25 km (16 mi) below the surface.
A larger quake followed: M5.0 64 km ESE of Katsuura, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1973-01-20 13:06:45 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 34.975° N, 140.910° 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
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 16 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.064 km ESE of Katsuura, Japan · 19603 days ago · 20 km deep · 11 km away
- 4.960 km ESE of Katsuura, Japan · 19603 days ago · 33 km deep · 12 km away
- 4.350 km SE of ?hara, Japan · 19596 days ago · 44 km deep · 5 km away
- 3.850 km ESE of ?hara, Japan · 19596 days ago · 42 km deep · 10 km away
- 4.351 km E of ?hara, Japan · 19589 days ago · 31 km deep · 22 km away
- 4.189 km SE of Tateyama, Japan · 19589 days ago · 42 km deep · 85 km away
- 4.689 km ESE of ?hara, Japan · 19588 days ago · 33 km deep · 38 km away
- 4.353 km ESE of ?hara, Japan · 19587 days ago · 43 km deep · 7 km away
- 3.953 km SSE of Hasaki, Japan · 19587 days ago · 22 km deep · 35 km away
- 4.243 km ESE of ?hara, Japan · 19587 days ago · 49 km deep · 15 km away
- 4.060 km E of ?hara, Japan · 19587 days ago · 20 km deep · 26 km away
- 4.162 km ESE of Katsuura, Japan · 19587 days ago · 34 km deep · 12 km away
- 4.2131 km SE of Katsuura, Japan · 19565 days ago · 60 km deep · 78 km away
- 4.041 km ESE of ?hara, Japan · 19562 days ago · 53 km deep · 16 km away
- 4.4121 km SE of ?hara, Japan · 19557 days ago · 63 km deep · 65 km away
- 4.1113 km ESE of Katsuura, Japan · 19557 days ago · 68 km deep · 59 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000007n. Read Tue, Sep 22, 2026, 10:22 AM UTC.