M4.5 earthquake 56 km E of ?hara, Japan
A magnitude 4.5 earthquake struck 56 km E of ?hara, Japan on Thu, Apr 6, 1978, 10:15 PM JST (13:15 UTC), 45 km (28 mi) below the surface.
A larger quake followed: M5.2 55 km E of ?hara, 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
- 1978-04-06 13:15:50 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 35.176° N, 141.008° 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
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.378 km SSE of Hasaki, Japan · 17701 days ago · 33 km deep · 23 km away
- 5.255 km E of ?hara, Japan · 17701 days ago · 38 km deep · 7 km away
- 5.958 km E of ?hara, Japan · 17700 days ago · 31 km deep · 5 km away
- 4.780 km SSE of Hasaki, Japan · 17700 days ago · 19 km deep · 27 km away
- 4.284 km SSE of Hasaki, Japan · 17700 days ago · 15 km deep · 29 km away
- 5.02 km WNW of Asahi, Japan · 17700 days ago · 57 km deep · 70 km away
- 4.516 km SSW of Hasaki, Japan · 17695 days ago · 55 km deep · 49 km away
- 4.583 km SSE of Hasaki, Japan · 17690 days ago · 33 km deep · 31 km away
- 4.5140 km ESE of ?hara, Japan · 17678 days ago · 33 km deep · 91 km away
- 4.55 km ESE of Mobara, Japan · 17652 days ago · 35 km deep · 65 km away
- 4.3135 km SE of Hasaki, Japan · 17652 days ago · 33 km deep · 96 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000ty2. Read Tue, Sep 22, 2026, 5:39 AM UTC.