M4.8 earthquake 42 km ENE of ?hara, Japan
A magnitude 4.8 earthquake struck 42 km ENE of ?hara, Japan on Sun, May 9, 1982, 7:47 AM JST (22:47 UTC), 58 km (36 mi) below the surface.
A larger quake followed: M5.0 66 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
- 4.8 (mb), light
- Local time
- UTC
- 1982-05-08 22:47:41 UTC
- Depth
- 57.8 km (35.9 mi), shallow
- Epicenter
- 35.329° N, 140.845° 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 1.8 and up: 5 in the 60 days after this one and 5 in the 30 days before it.
After
- 5.066 km SSE of Hasaki, Japan · 16202 days ago · 25 km deep · 36 km away
- 4.13 km NNE of Narita, Japan · 16174 days ago · 68 km deep · 71 km away
- 4.458 km NE of Hasaki, Japan · 16164 days ago · 33 km deep · 93 km away
- 4.010 km NNW of Sakura, Japan · 16163 days ago · 76 km deep · 79 km away
- 4.33 km SSW of Kashiwa, Japan · 16157 days ago · 126 km deep · 98 km away
Before
- 4.511 km E of Tateyama, Japan · 16228 days ago · 100 km deep · 87 km away
- 4.910 km ESE of Omigawa, Japan · 16237 days ago · 66 km deep · 55 km away
- 5.2118 km SE of Hasaki, Japan · 16237 days ago · 44 km deep · 86 km away
- 4.42 km WSW of Sakura, Japan · 16238 days ago · 60 km deep · 71 km away
- 4.03 km ENE of Honch?, Japan · 16242 days ago · 72 km deep · 86 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001m62. Read Wed, Sep 30, 2026, 5:42 PM UTC.