M4.9 earthquake 26 km SE of Hitachi, Japan
A magnitude 4.9 earthquake struck 26 km SE of Hitachi, Japan on Fri, Aug 7, 1981, 4:56 PM JST (07:56 UTC), 60 km (37 mi) below the surface.
A larger quake followed: M5.5 6 km ESE 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
- 4.9 (mb), light
- Local time
- UTC
- 1981-08-07 07:56:16 UTC
- Depth
- 59.6 km (37.0 mi), shallow
- Epicenter
- 36.466° N, 140.899° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.410 km SSE of Hasaki, Japan · 16465 days ago · 33 km deep · 91 km away
- 3.98 km NNW of Sakura, Japan · 16462 days ago · 76 km deep · 98 km away
- 5.56 km ESE of Hasaki, Japan · 16456 days ago · 58 km deep · 84 km away
- 4.843 km NE of Hasaki, Japan · 16445 days ago · 39 km deep · 52 km away
- 4.599 km ESE of Takahagi, Japan · 16445 days ago · 33 km deep · 77 km away
- 4.91 km ESE of Ishige, Japan · 16445 days ago · 87 km deep · 91 km away
- 4.021 km NNE of Daigo, Japan · 16431 days ago · 99 km deep · 69 km away
- 4.333 km ESE of Hitachi, Japan · 16428 days ago · 65 km deep · 6 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001f5e. Read Tue, Sep 22, 2026, 7:54 AM UTC.