M6.8 earthquake 3 km W of Maruoka, Japan
A magnitude 6.8 earthquake struck 3 km W of Maruoka, Japan on Mon, Jun 28, 1948, 5:13 PM GMT+10 (07:13 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.8 (mw), strong
- Local time
- UTC
- 1948-06-28 07:13:31 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 36.157° N, 136.229° E
- Region
- Japan
- Strongest shaking
- VII, very strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VII, very strong shaking
- Peak ground acceleration
- 32.0% of gravity
- Peak ground velocity
- 3.8 cm/s
- Map
- Automatic
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
- ±0.30
- 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: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem897413. Read Tue, Sep 22, 2026, 4:03 PM UTC.