M4.9 earthquake 10 km ESE of Omigawa, Japan
A magnitude 4.9 earthquake struck 10 km ESE of Omigawa, Japan on Sun, Apr 18, 1982, 9:09 AM JST (00:09 UTC), 66 km (41 mi) below the surface.
A larger quake followed: M5.0 66 km SSE of Hasaki, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1982-04-18 00:09:12 UTC
- Depth
- 65.7 km (40.8 mi), shallow
- Epicenter
- 35.818° N, 140.725° 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 1.9 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.82 km SSW of Sakai, Japan · 16228 days ago · 65 km deep · 89 km away
- 4.531 km E of ?arai, Japan · 16223 days ago · 87 km deep · 54 km away
- 4.842 km ENE of ?hara, Japan · 16208 days ago · 58 km deep · 55 km away
- 5.066 km SSE of Hasaki, Japan · 16194 days ago · 25 km deep · 80 km away
- 4.16 km NNW of Kasama, Japan · 16170 days ago · 92 km deep · 82 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001kt9. Read Tue, Sep 22, 2026, 8:47 PM UTC.