M6.0 earthquake 142 km E of Miyako, Japan
A magnitude 6.0 earthquake struck 142 km E of Miyako, Japan on Sat, Apr 30, 1955, 11:05 PM JST (14:05 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M6.6 154 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
- 6.0 (Mw, moment), moderate
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1955-04-30 14:05:10 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 39.733° N, 143.598° 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
- ±0.36
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.0 and up: 6 in the 60 days after this one and 0 in the 30 days before it.
After
- 6.6154 km E of Miyako, Japan · 26090 days ago · 10 km deep · 12 km away
- 6.2163 km E of Miyako, Japan · 26090 days ago · 10 km deep · 22 km away
- 6.1129 km E of Miyako, Japan · 26088 days ago · 25 km deep · 13 km away
- 6.0137 km ENE of Miyako, Japan · 26085 days ago · 20 km deep · 42 km away
- 6.2120 km ENE of Miyako, Japan · 26056 days ago · 37 km deep · 53 km away
- 6.189 km ENE of Miyako, Japan · 26056 days ago · 30 km deep · 71 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem889484. Read Mon, Oct 5, 2026, 7:08 AM UTC.