M5.6 earthquake 5 km NNE of Sakaki, Japan
A magnitude 5.6 earthquake struck 5 km NNE of Sakaki, Japan on Sun, Aug 28, 1966, 1:09 PM JST (04:09 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M5.7 2 km SE of Suzaka, 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), moderate
- Local time
- UTC
- 1966-08-28 04:09:24 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 36.507° N, 138.209° 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 2.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.59 km SSW of Suzaka, Japan · 21940 days ago · 6 km deep · 9 km away
- 5.72 km SE of Suzaka, Japan · 21882 days ago · 10 km deep · 18 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem844997. Read Tue, Sep 22, 2026, 11:00 AM UTC.