M3.5 earthquake 5 km N of Sakura, Japan
A magnitude 3.5 earthquake struck 5 km N of Sakura, Japan on Mon, Feb 21, 1983, 7:00 AM JST (22:00 UTC), 78 km (49 mi) below the surface.
A larger quake followed: M5.9 1 km NE of Nagareyama, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.5 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1983-02-20 22:00:30 UTC
- Depth
- 78.1 km (48.5 mi), intermediate-depth
- Epicenter
- 35.766° N, 140.243° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.14 km NE of Honch?, Japan · 15931 days ago · 79 km deep · 20 km away
- 3.89 km NNW of Ishige, Japan · 15927 days ago · 146 km deep · 56 km away
- 5.91 km NE of Nagareyama, Japan · 15926 days ago · 78 km deep · 32 km away
- 4.59 km SE of ?hara, Japan · 15925 days ago · 59 km deep · 67 km away
- 4.22 km WNW of Narita, Japan · 15912 days ago · 67 km deep · 5 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001t75. Read Mon, Oct 5, 2026, 1:51 PM UTC.