Taiwan earthquakes

M4.0 earthquake 49 km ESE of Yilan, Taiwan

A magnitude 4.0 earthquake struck 49 km ESE of Yilan, Taiwan on Fri, Sep 20, 1985, 10:26 PM GMT+8 (14:26 UTC), 10 km (6 mi) below the surface.

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

Yilan forecastMore in Taiwan

Map

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

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The earthquake

Magnitude
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1985-09-20 14:26:43 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
24.517° N, 122.162° E
Region
Taiwan
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
OPERATOR_ASSIGNED

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 5.556 km ESE of Yilan, Taiwan · 14990 days ago · 18 km deep · 15 km away
  2. 4.224 km E of Yilan, Taiwan · 14976 days ago · 10 km deep · 29 km away
  3. 4.421 km NE of Hualien City, Taiwan · 14956 days ago · 33 km deep · 61 km away
  4. 4.251 km NE of Hualien City, Taiwan · 14955 days ago · 20 km deep · 31 km away
  5. 4.438 km SSE of Yilan, Taiwan · 14954 days ago · 11 km deep · 31 km away
  6. 4.017 km W of Yonakuni, Japan · 14954 days ago · 93 km deep · 68 km away
  7. 4.149 km ESE of Yilan, Taiwan · 14952 days ago · 10 km deep · 7 km away
  8. 5.243 km E of Yilan, Taiwan · 14947 days ago · 84 km deep · 32 km away
  9. 4.711 km S of Yonakuni, Japan · 14946 days ago · 52 km deep · 87 km away
  10. 4.825 km E of Yilan, Taiwan · 14942 days ago · 90 km deep · 29 km away
  11. 4.766 km SE of Yilan, Taiwan · 14942 days ago · 27 km deep · 20 km away
  12. 4.25 km SE of Hualien City, Taiwan · 14933 days ago · 22 km deep · 84 km away
  13. 4.879 km E of Hualien City, Taiwan · 14931 days ago · 18 km deep · 63 km away

Before

  1. 3.99 km SW of Hualien City, Taiwan · 14993 days ago · 21 km deep · 91 km away
  2. 4.972 km SW of Yonakuni, Japan · 14997 days ago · 35 km deep · 75 km away
  3. 5.114 km NW of Yonakuni, Japan · 15000 days ago · 106 km deep · 74 km away
  4. 3.820 km N of Yonakuni, Japan · 15009 days ago · 33 km deep · 84 km away
  5. 3.745 km SE of Yilan, Taiwan · 15011 days ago · 28 km deep · 16 km away
  6. 4.554 km ESE of Yilan, Taiwan · 15011 days ago · 10 km deep · 7 km away
  7. 4.668 km ENE of Hualien City, Taiwan · 15012 days ago · 43 km deep · 42 km away
  8. 4.152 km WNW of Yonakuni, Japan · 15015 days ago · 10 km deep · 38 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002jy6. Read Mon, Oct 5, 2026, 9:32 AM UTC.