M 5.5 in Taiwan on 25 Aug 2026 07:00 UTC

Hazard models

Rapid Impact
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 5.5M
Depth: 14.6 Km
Lat/Lon: 22.6053 , 121.5709
Event Date: 25 Aug 2026 07:00 UTC
25 Aug 2026 15:00 Local
Exposed Population: 2 thousand in MMI>=V
Source: NEIC us6000tnbm
Inserted at: 25 Aug 2026 07:19 UTC
INFORM Coping capacity of the alert score: 1.1 (Taiwan)

GDACS Score

For more info on GDACS score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000tnbm Scaled population (raster) 0  
  C1 shakemap 0  
  C2 shakemap 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
  Score no CC 0  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDLevelScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1729074 0 25 Aug 2026 07:00 5.5M, 14.6km 5.61 N/A (in MMI>=VII) 00:19 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Taiwan ,of Taiwan (population 22,456,987) . The alertlevel for this event is GREEN

Intensity Population
<1000 people
1400 people


Shakemaps Timeline

LevelShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1729074 121.571/22.605 5.5 14.6 5.661 25 Aug 2026 07:23 00:23 (new episode)
2 0 1729074 121.571/22.605 5.5 14.6 5.453 25 Aug 2026 09:05 02:05 (upd of #1)
3 0 1729074 121.571/22.605 5.5 14.6 5.453 26 Aug 2026 14:01 1d 07:01 (upd of #2)

Affected Provinces

Intensity Region Province Population
Taiwan 4.2 million people
Taiwan 4.1 million people


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Green Island GNI 8 Civ. Paved No 3300 13 km
Taitung TTT 37 Mil. Paved No 11000 45 km
Feng Nin 42 Civ. Paved Yes 7900 51 km
Orchid Island KYD 10 Civ. Paved No 4500 64 km
Hengchun HCN 13 Civ. Paved No 3500 107 km
Pingtung North 29 Mil. Paved No 8000 112 km
Pingtung South 24 Mil. Paved Yes 7800 114 km
Kaohsiung International KHH 9 Civ. Paved Yes 10300 126 km
Kangshan 10 Mil. Paved No 7500 136 km
Kuei Jen 30 0 139 km
Highway Strip 331 334 11 0 139 km
Highway Strip 296 298 9 0 153 km
Chiayi CYI 25 Civ. Paved Yes 10000 154 km
Tso Ying 9 0 133 km
Tainan TNN 19 Mil. Paved Yes 10000 145 km
Hualien HUN 16 Civ. Paved Yes 9000 157 km
Highway Strip 260 30 0 158 km
Highway Strip 206 23 0 186 km

Ports

Intensity Name LOCODE Distance
Tai Tung 53 km
Lan Yu Island 61 km
Kaohsiung TWKHH 135 km
Tai Nan 136 km
An Ping Chiang 152 km
Hualien TWHUN 153 km
Taichung TWTXG 210 km

Dams

Intensity Reservoir Dam Name River Year Distance
Tsengwen Tsengwen 1973 127 km
Wushantou Offstream Kuantien 1930 140 km

Nuclear Facilities

Site Name Type Name Distance
Site-Hengchun Nuclear Power Reactor Maanshan-1 110 km
Site-Hengchun Nuclear Power Reactor Maanshan-2 110 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.