M4.9 earthquake 123 km E of Yamada, Japan
A magnitude 4.9 earthquake struck 123 km E of Yamada, Japan on Tue, Mar 30, 1976, 6:25 PM JST (09:25 UTC), 46 km (29 mi) below the surface.
A larger quake followed: M5.0 138 km E of Miyako, 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
- 1976-03-30 09:25:00 UTC
- Depth
- 46.0 km (28.6 mi), shallow
- Epicenter
- 39.449° N, 143.386° 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.
- Stations used
- 44
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 11 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.6181 km E of Yamada, Japan · 18438 days ago · 33 km deep · 59 km away
- 4.8122 km E of Miyako, Japan · 18433 days ago · 28 km deep · 22 km away
- 4.8159 km E of Miyako, Japan · 18427 days ago · 33 km deep · 45 km away
- 4.9143 km E of Miyako, Japan · 18427 days ago · 16 km deep · 38 km away
- 5.0138 km E of Miyako, Japan · 18427 days ago · 33 km deep · 33 km away
- 4.7151 km E of Miyako, Japan · 18427 days ago · 30 km deep · 39 km away
- 4.9134 km E of Miyako, Japan · 18427 days ago · 33 km deep · 33 km away
- 5.5125 km ENE of Miyako, Japan · 18418 days ago · 17 km deep · 81 km away
- 4.7141 km ENE of Miyako, Japan · 18418 days ago · 33 km deep · 70 km away
- 3.8157 km ENE of Miyako, Japan · 18418 days ago · 30 km deep · 72 km away
- 4.0163 km ESE of Yamada, Japan · 18408 days ago · 33 km deep · 66 km away
Before
- 5.0119 km E of Yamada, Japan · 18438 days ago · 49 km deep · 8 km away
- 4.4210 km E of Yamada, Japan · 18438 days ago · 33 km deep · 89 km away
- 5.3119 km E of Yamada, Japan · 18438 days ago · 40 km deep · 7 km away
- 5.4111 km E of Miyako, Japan · 18438 days ago · 42 km deep · 26 km away
- 5.0184 km ENE of Miyako, Japan · 18438 days ago · 29 km deep · 94 km away
- 4.6181 km ENE of Miyako, Japan · 18453 days ago · 23 km deep · 96 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000fq2. Read Tue, Sep 22, 2026, 9:41 AM UTC.