Taiwan earthquakes

M4.2 earthquake 24 km E of Yilan, Taiwan

A magnitude 4.2 earthquake struck 24 km E of Yilan, Taiwan on Fri, Oct 4, 1985, 10:27 PM GMT+8 (14:27 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.2 43 km E 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1985-10-04 14:27:07 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
24.727° N, 121.995° 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: 12 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.421 km NE of Hualien City, Taiwan · 14956 days ago · 33 km deep · 71 km away
  2. 4.251 km NE of Hualien City, Taiwan · 14955 days ago · 20 km deep · 48 km away
  3. 4.438 km SSE of Yilan, Taiwan · 14954 days ago · 11 km deep · 36 km away
  4. 4.017 km W of Yonakuni, Japan · 14954 days ago · 93 km deep · 89 km away
  5. 4.149 km ESE of Yilan, Taiwan · 14951 days ago · 10 km deep · 27 km away
  6. 5.243 km E of Yilan, Taiwan · 14947 days ago · 84 km deep · 21 km away
  7. 4.825 km E of Yilan, Taiwan · 14942 days ago · 90 km deep · 2 km away
  8. 4.766 km SE of Yilan, Taiwan · 14941 days ago · 27 km deep · 48 km away
  9. 4.25 km SE of Hualien City, Taiwan · 14933 days ago · 22 km deep · 95 km away
  10. 4.879 km E of Hualien City, Taiwan · 14931 days ago · 18 km deep · 91 km away
  11. 4.572 km SW of Yonakuni, Japan · 14925 days ago · 43 km deep · 82 km away
  12. 4.659 km NNW of Yonakuni, Japan · 14921 days ago · 10 km deep · 72 km away

Before

  1. 5.556 km ESE of Yilan, Taiwan · 14990 days ago · 18 km deep · 32 km away
  2. 4.049 km ESE of Yilan, Taiwan · 14990 days ago · 10 km deep · 29 km away
  3. 5.114 km NW of Yonakuni, Japan · 15000 days ago · 106 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002kfb. Read Mon, Oct 5, 2026, 4:38 AM UTC.