M4.8 earthquake 62 km E of Mutsu, Japan
A magnitude 4.8 earthquake struck 62 km E of Mutsu, Japan on Sun, Dec 23, 1984, 8:20 PM JST (11:20 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1984-12-23 11:20:39 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 41.273° N, 141.959° 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 1.8 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.837 km SSE of Shizunai-furukawach?, Japan · 15244 days ago · 78 km deep · 95 km away
- 4.674 km ENE of Mutsu, Japan · 15224 days ago · 63 km deep · 28 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002abz. Read Tue, Sep 22, 2026, 8:50 PM UTC.