M4.8 earthquake 121 km E of Yamada, Japan
A magnitude 4.8 earthquake struck 121 km E of Yamada, Japan on Thu, Aug 19, 1982, 5:50 AM JST (20:50 UTC), 41 km (26 mi) below the surface.
A larger quake followed: M4.9 122 km E of Yamada, 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
- 1982-08-18 20:50:45 UTC
- Depth
- 41.2 km (25.6 mi), shallow
- Epicenter
- 39.545° N, 143.357° 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
- FROM_LOCATION
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 11 in the 30 days before it.
After
- 4.7119 km E of Yamada, Japan · 16105 days ago · 49 km deep · 3 km away
- 4.6121 km E of Yamada, Japan · 16105 days ago · 51 km deep · 1 km away
- 4.9122 km E of Yamada, Japan · 16104 days ago · 41 km deep · 4 km away
- 4.8158 km ENE of Miyako, Japan · 16055 days ago · 33 km deep · 66 km away
- 5.4165 km ENE of Miyako, Japan · 16053 days ago · 28 km deep · 78 km away
Before
- 5.2138 km E of Yamada, Japan · 16106 days ago · 30 km deep · 36 km away
- 4.9129 km E of Yamada, Japan · 16111 days ago · 29 km deep · 30 km away
- 4.7124 km E of Yamada, Japan · 16111 days ago · 30 km deep · 25 km away
- 4.9117 km E of Yamada, Japan · 16111 days ago · 29 km deep · 22 km away
- 4.5114 km E of Yamada, Japan · 16112 days ago · 33 km deep · 19 km away
- 5.3114 km E of Yamada, Japan · 16112 days ago · 33 km deep · 17 km away
- 5.1116 km E of Yamada, Japan · 16112 days ago · 33 km deep · 17 km away
- 4.3129 km E of Yamada, Japan · 16113 days ago · 33 km deep · 25 km away
- 5.1113 km E of Yamada, Japan · 16114 days ago · 35 km deep · 23 km away
- 4.8111 km E of Yamada, Japan · 16114 days ago · 33 km deep · 23 km away
- 4.7113 km E of Yamada, Japan · 16115 days ago · 33 km deep · 26 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001p4g. Read Tue, Sep 22, 2026, 9:33 PM UTC.