M4.5 earthquake 26 km W of Otofuke, Japan
A magnitude 4.5 earthquake struck 26 km W of Otofuke, Japan on Sun, Sep 24, 1978, 3:06 AM JST (18:06 UTC), 123 km (76 mi) below the surface.
A larger quake followed: M4.8 56 km SE of Obihiro, 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
- 1978-09-23 18:06:18 UTC
- Depth
- 123.0 km (76.4 mi), intermediate-depth
- Epicenter
- 43.027° N, 142.879° 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
- 58
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 0 in the 30 days before it.
After
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000wpj. Read Wed, Sep 23, 2026, 5:52 PM UTC.