M6.1 earthquake 142 km SSE of Honchō, Japan
A magnitude 6.1 earthquake struck 142 km SSE of Honchō, Japan on Sun, Sep 15, 1968, 7:50 PM JST (10:50 UTC), 27 km (17 mi) below the surface.
A larger quake followed: M6.2 74 km E of Noda, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (mw), strong
- Local time
- UTC
- 1968-09-15 10:50:15 UTC
- Depth
- 27.4 km (17.0 mi), shallow
- Epicenter
- 40.869° N, 143.271° 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 3.1 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.5169 km SSE of Honchō, Japan · 21193 days ago · 26 km deep · 39 km away
- 6.0170 km E of Noda, Japan · 21190 days ago · 26 km deep · 73 km away
- 6.1167 km E of Noda, Japan · 21190 days ago · 23 km deep · 71 km away
- 6.0200 km E of Noda, Japan · 21163 days ago · 15 km deep · 90 km away
- 5.9126 km E of Noda, Japan · 21141 days ago · 32 km deep · 82 km away
- 5.7132 km SSE of Hiroo, Japan · 21140 days ago · 32 km deep · 78 km away
- 6.274 km E of Noda, Japan · 21139 days ago · 49 km deep · 94 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem817038. Read Tue, Sep 29, 2026, 3:12 PM UTC.