M4.6 earthquake 290 km SSE of Kushiro, Japan
A magnitude 4.6 earthquake struck 290 km SSE of Kushiro, Japan on Sat, Dec 17, 1977, 7:09 AM JST (22:09 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
- 4.6 (mb), light
- Local time
- UTC
- 1977-12-16 22:09:10 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 40.447° N, 145.285° 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
- Stations used
- 7
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000s3x. Read Tue, Sep 22, 2026, 9:23 AM UTC.