M4.8 earthquake 41 km S of Yilan, Taiwan
A magnitude 4.8 earthquake struck 41 km S of Yilan, Taiwan on Mon, Aug 5, 1985, 9:02 PM GMT+8 (13:02 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.
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
- 1985-08-05 13:02:35 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 24.382° N, 121.794° 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 1.8 and up: 13 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.444 km SSE of Yilan, Taiwan · 15031 days ago · 10 km deep · 21 km away
- 3.738 km SSE of Yilan, Taiwan · 15028 days ago · 10 km deep · 6 km away
- 4.48 km N of Yilan, Taiwan · 15024 days ago · 32 km deep · 51 km away
- 4.917 km S of Hualien City, Taiwan · 15016 days ago · 33 km deep · 65 km away
- 4.152 km WNW of Yonakuni, Japan · 15010 days ago · 10 km deep · 78 km away
- 4.668 km ENE of Hualien City, Taiwan · 15007 days ago · 43 km deep · 53 km away
- 4.554 km ESE of Yilan, Taiwan · 15007 days ago · 10 km deep · 48 km away
- 3.745 km SE of Yilan, Taiwan · 15006 days ago · 28 km deep · 25 km away
- 3.832 km SSE of Hualien City, Taiwan · 14992 days ago · 28 km deep · 78 km away
- 4.972 km SW of Yonakuni, Japan · 14992 days ago · 35 km deep · 92 km away
- 3.99 km SW of Hualien City, Taiwan · 14988 days ago · 21 km deep · 57 km away
- 4.049 km ESE of Yilan, Taiwan · 14985 days ago · 10 km deep · 40 km away
- 5.556 km ESE of Yilan, Taiwan · 14985 days ago · 18 km deep · 54 km away
Before
- 5.542 km SSE of Yilan, Taiwan · 15031 days ago · 10 km deep · 9 km away
- 3.850 km ESE of Jiufen, Taiwan · 15045 days ago · 105 km deep · 82 km away
- 4.078 km E of Hualien City, Taiwan · 15054 days ago · 33 km deep · 79 km away
- 4.828 km NNE of Hualien City, Taiwan · 15057 days ago · 35 km deep · 21 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002hdp. Read Wed, Sep 30, 2026, 11:18 AM UTC.