M4.0 earthquake 225 km ENE of Miyako, Japan
A magnitude 4.0 earthquake struck 225 km ENE of Miyako, Japan on Sun, Mar 19, 1978, 7:01 AM JST (22:01 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M5.4 215 km E of Miyako, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-03-18 22:01:35 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 40.522° N, 144.325° 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
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 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 usp0000tfd. Read Mon, Oct 5, 2026, 9:41 AM UTC.