M4.0 earthquake 261 km E of Miyako, Japan
A magnitude 4.0 earthquake struck 261 km E of Miyako, Japan on Wed, Mar 15, 2017, 6:30 AM JST (21:30 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.3 264 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
- 2017-03-14 21:30:38 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 40.052° N, 144.956° 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.
- Location uncertainty
- About 7.8 km horizontally, 1.6 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- Operator assigned
- Station coverage gap
- 139°
- Stations used
- 26
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 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 us20008trj. Read Sun, Oct 4, 2026, 6:55 PM UTC.