M4.4 earthquake 45 km NE of Mutsu, Japan
A magnitude 4.4 earthquake struck 45 km NE of Mutsu, Japan on Sun, Sep 6, 1987, 4:46 PM JST (07:46 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.9 68 km ENE of Mutsu, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1987-09-06 07:46:39 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 41.540° N, 141.648° 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 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000384y. Read Tue, Sep 22, 2026, 9:00 PM UTC.