M4.5 earthquake 19 km ENE of ?hara, Japan
A magnitude 4.5 earthquake struck 19 km ENE of ?hara, Japan on Mon, Jun 20, 1977, 3:12 PM JST (06:12 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 10 km SE of T?gane, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1977-06-20 06:12:47 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 35.302° N, 140.598° 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.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.445 km E of ?hara, Japan · 17991 days ago · 26 km deep · 27 km away
- 4.513 km NE of ?hara, Japan · 17989 days ago · 35 km deep · 8 km away
- 5.110 km SE of T?gane, Japan · 17989 days ago · 35 km deep · 24 km away
- 4.7near the east coast of Honshu, Japan · 17988 days ago · 30 km deep · 29 km away
- 4.132 km ENE of ?hara, Japan · 17968 days ago · 28 km deep · 13 km away
- 4.13 km SE of Chiba, Japan · 17968 days ago · 76 km deep · 51 km away
- 4.493 km ESE of ?hara, Japan · 17963 days ago · 33 km deep · 79 km away
- 4.827 km S of Hasaki, Japan · 17943 days ago · 52 km deep · 29 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000pcu. Read Tue, Sep 22, 2026, 10:02 AM UTC.