M4.6 earthquake 43 km SE of Hasaki, Japan
A magnitude 4.6 earthquake struck 43 km SE of Hasaki, Japan on Fri, Mar 27, 1987, 8:19 PM JST (11:19 UTC), 57 km (35 mi) below the surface.
A larger quake followed: M4.9 11 km NNW 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
- 4.6 (mb), light
- Local time
- UTC
- 1987-03-27 11:19:12 UTC
- Depth
- 56.8 km (35.3 mi), shallow
- Epicenter
- 35.425° N, 141.135° 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.578 km SE of Hasaki, Japan · 14423 days ago · 33 km deep · 35 km away
- 4.911 km NNW of Hasaki, Japan · 14411 days ago · 65 km deep · 56 km away
- 4.373 km SE of ?hara, Japan · 14408 days ago · 26 km deep · 63 km away
- 4.926 km SE of Narut?, Japan · 14389 days ago · 74 km deep · 44 km away
- 4.7near the east coast of Honshu, Japan · 14376 days ago · 56 km deep · 71 km away
- 4.74 km SSE of Omigawa, Japan · 14373 days ago · 68 km deep · 63 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00033pc. Read Tue, Sep 22, 2026, 7:08 AM UTC.