M4.4 earthquake 93 km ESE of ?hara, Japan
A magnitude 4.4 earthquake struck 93 km ESE of ?hara, Japan on Mon, Jul 18, 1977, 3:41 PM JST (06:41 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.5 60 km SSE 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
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1977-07-18 06:41:45 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 34.954° N, 141.352° 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 1.5 and up: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.827 km S of Hasaki, Japan · 17956 days ago · 52 km deep · 77 km away
- 5.560 km SSE of Hasaki, Japan · 17941 days ago · 42 km deep · 39 km away
- 4.452 km SE of Hasaki, Japan · 17941 days ago · 33 km deep · 48 km away
Before
- 4.132 km ENE of ?hara, Japan · 17980 days ago · 28 km deep · 68 km away
- 4.7near the east coast of Honshu, Japan · 18000 days ago · 30 km deep · 96 km away
- 4.513 km NE of ?hara, Japan · 18001 days ago · 35 km deep · 86 km away
- 4.445 km E of ?hara, Japan · 18003 days ago · 26 km deep · 58 km away
- 4.519 km ENE of ?hara, Japan · 18003 days ago · 33 km deep · 79 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000psb. Read Sun, Oct 4, 2026, 1:53 PM UTC.