M4.7 earthquake 93 km WNW of Naze, Japan
A magnitude 4.7 earthquake struck 93 km WNW of Naze, Japan on Sun, Feb 21, 1982, 12:12 AM JST (15:12 UTC), 40 km (25 mi) below the surface.
A larger quake followed: M4.8 125 km W of Naze, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1982-02-20 15:12:31 UTC
- Depth
- 39.7 km (24.7 mi), shallow
- Epicenter
- 28.664° N, 128.589° 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.
- Depth from
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 1 in the 60 days after this one and 6 in the 30 days before it.
After
Before
- 4.8120 km WNW of Naze, Japan · 16285 days ago · 43 km deep · 27 km away
- 4.7117 km WNW of Naze, Japan · 16285 days ago · 33 km deep · 27 km away
- 4.9105 km WNW of Naze, Japan · 16287 days ago · 33 km deep · 20 km away
- 4.4158 km W of Naze, Japan · 16287 days ago · 33 km deep · 83 km away
- 4.9126 km WNW of Naze, Japan · 16287 days ago · 44 km deep · 33 km away
- 4.6153 km W of Naze, Japan · 16287 days ago · 33 km deep · 76 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001jqy (also filed as iscgem604330). Read Tue, Sep 22, 2026, 10:26 AM UTC.