M5.6 earthquake 6 km NNE of Sakaki, Japan
A magnitude 5.6 earthquake struck 6 km NNE of Sakaki, Japan on Wed, Aug 3, 1966, 3:48 AM JST (18:48 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M5.6 5 km NNE of Sakaki, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.6 (Mw, moment), moderate
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1966-08-02 18:48:36 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 36.523° N, 138.218° 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.6 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 iscgem844075. Read Sun, Oct 4, 2026, 11:56 PM UTC.