Japan earthquakes

M4.9 earthquake 72 km SW of Yonakuni, Japan

A magnitude 4.9 earthquake struck 72 km SW of Yonakuni, Japan on Sat, Sep 14, 1985, 2:34 AM GMT+8 (18:34 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.5 56 km ESE of Yilan, Taiwan. This one was a foreshock.

Xiulin forecastMore in Japan

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
4.9 (mb), light
Local time
UTC
1985-09-13 18:34:21 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
23.945° N, 122.562° 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: 9 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 4.049 km ESE of Yilan, Taiwan · 14984 days ago · 10 km deep · 75 km away
  2. 5.556 km ESE of Yilan, Taiwan · 14984 days ago · 18 km deep · 78 km away
  3. 4.421 km NE of Hualien City, Taiwan · 14951 days ago · 33 km deep · 87 km away
  4. 4.251 km NE of Hualien City, Taiwan · 14949 days ago · 20 km deep · 71 km away
  5. 4.438 km SSE of Yilan, Taiwan · 14949 days ago · 11 km deep · 88 km away
  6. 4.017 km W of Yonakuni, Japan · 14948 days ago · 93 km deep · 66 km away
  7. 4.149 km ESE of Yilan, Taiwan · 14946 days ago · 10 km deep · 78 km away
  8. 4.711 km S of Yonakuni, Japan · 14940 days ago · 52 km deep · 65 km away
  9. 4.766 km SE of Yilan, Taiwan · 14936 days ago · 27 km deep · 56 km away

Before

  1. 3.832 km SSE of Hualien City, Taiwan · 14991 days ago · 28 km deep · 94 km away
  2. 5.114 km NW of Yonakuni, Japan · 14994 days ago · 106 km deep · 75 km away
  3. 3.677 km SSE of Hualien City, Taiwan · 14998 days ago · 33 km deep · 96 km away
  4. 3.820 km N of Yonakuni, Japan · 15003 days ago · 33 km deep · 89 km away
  5. 3.745 km SE of Yilan, Taiwan · 15005 days ago · 28 km deep · 76 km away
  6. 4.554 km ESE of Yilan, Taiwan · 15006 days ago · 10 km deep · 73 km away
  7. 4.668 km ENE of Hualien City, Taiwan · 15006 days ago · 43 km deep · 39 km away
  8. 4.152 km WNW of Yonakuni, Japan · 15010 days ago · 10 km deep · 77 km away
  9. 4.917 km S of Hualien City, Taiwan · 15016 days ago · 33 km deep · 98 km away

Earthquakes todayJapan earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002jrb. Read Tue, Sep 29, 2026, 4:01 PM UTC.