M4.6 earthquake 19 km NE of Hasaki, Japan
A magnitude 4.6 earthquake struck 19 km NE of Hasaki, Japan on Sun, Jan 5, 1986, 2:08 AM JST (17:08 UTC), 53 km (33 mi) below the surface.
A larger quake followed: M6.2 49 km ESE of Hitachi, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1986-01-04 17:08:56 UTC
- Depth
- 53.2 km (33.1 mi), shallow
- Epicenter
- 35.874° N, 140.969° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (I JMA) at Choshi and Mito.
From the USGS event page for usp0002prs. U.S. Geological Survey text and figures are in the public domain.
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 1.6 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.245 km ESE of Kitaibaraki, Japan · 14874 days ago · 54 km deep · 96 km away
- 4.45 km SE of Yotsukaid?, Japan · 14856 days ago · 80 km deep · 74 km away
- 6.249 km ESE of Hitachi, Japan · 14842 days ago · 30 km deep · 58 km away
- 4.627 km SE of Hitachi, Japan · 14842 days ago · 55 km deep · 66 km away
- 4.848 km ESE of Hitachi, Japan · 14840 days ago · 52 km deep · 60 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002prs. Read Thu, Oct 1, 2026, 10:06 PM UTC.