M4.7 earthquake 117 km WNW of Naze, Japan
A magnitude 4.7 earthquake struck 117 km WNW of Naze, Japan on Sat, Feb 20, 1982, 1:17 PM JST (04:17 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 120 km WNW 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 04:17:19 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 28.628° N, 128.317° 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
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.8120 km WNW of Naze, Japan · 16285 days ago · 43 km deep · 19 km away
- 4.793 km WNW of Naze, Japan · 16285 days ago · 40 km deep · 27 km away
- 4.8125 km W of Naze, Japan · 16284 days ago · 33 km deep · 13 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001jqg (also filed as iscgem604294). Read Tue, Sep 22, 2026, 9:42 AM UTC.