M6.3 earthquake 27 km NW of Tsuruga, Japan
A magnitude 6.3 earthquake struck 27 km NW of Tsuruga, Japan on Wed, Mar 27, 1963, 6:34 AM JST (21:34 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.3 (mw), strong
- Local time
- UTC
- 1963-03-26 21:34:40 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 35.789° N, 135.810° E
- Region
- Japan
- Strongest shaking
- VI, 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
- VI, strong shaking
- Peak ground acceleration
- 19.8% of gravity
- Peak ground velocity
- 3.0 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 3.3 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 iscgem872037. Read Tue, Sep 29, 2026, 3:21 AM UTC.