M4.1 earthquake 73 km ENE of Hasaki, Japan
A magnitude 4.1 earthquake struck 73 km ENE of Hasaki, Japan on Tue, Aug 27, 1985, 1:04 AM JST (16:04 UTC), 45 km (28 mi) below the surface.
A larger quake followed: M5.0 57 km ESE of Kitaibaraki, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-08-26 16:04:08 UTC
- Depth
- 44.8 km (27.8 mi), shallow
- Epicenter
- 36.034° N, 141.559° 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 Mito.
From the USGS event page for usp0002j5v. 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.
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 1.5 and up: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.276 km ESE of Iwaki, Japan · 14967 days ago · 47 km deep · 99 km away
- 5.057 km ESE of Kitaibaraki, Japan · 14964 days ago · 41 km deep · 69 km away
- 4.880 km ESE of Takahagi, Japan · 14962 days ago · 33 km deep · 37 km away
Before
- 5.1off the east coast of Honshu, Japan · 15011 days ago · 32 km deep · 64 km away
- 4.148 km ESE of Hitachi, Japan · 15015 days ago · 72 km deep · 58 km away
- 4.387 km ESE of Iwaki, Japan · 15018 days ago · 33 km deep · 82 km away
- 5.135 km E of ?arai, Japan · 15031 days ago · 52 km deep · 65 km away
- 4.6107 km ESE of Iwaki, Japan · 15032 days ago · 54 km deep · 90 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002j5v. Read Thu, Oct 1, 2026, 10:35 AM UTC.