Taiwan earthquakes

M6.5 earthquake 31 km SE of Puli, Taiwan

A magnitude 6.5 earthquake struck 31 km SE of Puli, Taiwan on Sun, Sep 26, 1999, 7:52 AM GMT+8 (23:52 UTC), 17 km (11 mi) below the surface.

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Map

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

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The earthquake

Magnitude: 6.5 (mwc), strong
Local time: Sun, Sep 26, 1999, 7:52 AM GMT+8
UTC: 1999-09-25 23:52:48 UTC
Depth: 17.0 km (10.6 mi), shallow
Epicenter: 23.738° N, 121.158° E
Region: Taiwan
Strongest shaking: VII, very strong shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Deaths and damage

From NOAA NCEI’s Significant Earthquake Database (record 5536), matched to this event by time and place.

Deaths: Few (about 1 to 50)
Damage: Limited (under about $1 million)

Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.

NOAA’s full record of this earthquake

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: VII, very strong shaking
Peak ground acceleration: 32.3% of gravity
Peak ground velocity: 2.9 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Reverse (thrust)
Nodal plane 1: Strike 12°, dip 20°, rake 95°
Nodal plane 2: Strike 187°, dip 70°, rake 88°

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 3.5 and up: 79 in the 60 days after this one and 104 in the 30 days before it.

After

The first 60 of 79.

Before

Earthquakes today Taiwan earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0009f1e (also filed as choy19990925235248, gcmtc092599e, gcmt19990925235248, atlas19990925235250, iscgem1656422). Read Tue, Sep 29, 2026, 4:35 PM UTC.