M 5.8 in China on 04 Aug 2021 21:50 UTC

Hazard models

EQ parameters
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: 5.8M
Depth: 10.51 Km
Lat/Lon: 24.7938 , 122.2791
Event Date: 04 Aug 2021 21:50 UTC
05 Aug 2021 05:50 Local
Exposed Population: 7.8 million in 100km
Source: NEIC us6000f29v
Inserted at: 04 Aug 2021 22:09 UTC
INFORM Coping capacity of the alert score: 3.6 (China)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000f29v Scaled population (vector) 0  
  C1 shakemap -0.37  
  C2 shakemap 0.76  
  Country Vulnerability 0  
  INFORM_normalised 0.82  
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

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1389526 0.6 04 Aug 2021 21:50 5.7M, 10km N/A 7.1 million (in 100km) 00:07 GEOFON
1389528 0 04 Aug 2021 21:50 5.8M, 10.51km 4.43 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 China ,of Taiwan (population 182,911) . The alertlevel for this event is GREEN

Intensity Population
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1389528 24.794/122.279 5.8 10.5 4.458 04 Aug 2021 22:10 00:20 (new episode)
2 0 1389528 24.794/122.279 5.8 10.5 4.581 04 Aug 2021 23:12 01:21 (upd of #1)
3 0 1389528 24.798/122.277 5.8 10.0 4.456 04 Aug 2021 23:55 02:04 (upd of #2)
4 0 1389528 24.798/122.277 5.8 10.0 4.429 05 Aug 2021 21:55 1d 00:04 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Taiwan China 7.1 million people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Tou-cheng I-lan Taiwan City - 48 km
Su-ao I-lan Taiwan City - 49 km
Shuang-hsi T'ai-pei Taiwan Village - 49 km
I-lan I-lan Taiwan Major city - 54 km
Nan-ao I-lan Taiwan City - 61 km
Chi-lung Chi-lung Shih Taiwan City 400000 people 66 km
Yü-lan I-lan Taiwan Village - 72 km
Wan-li T'ai-pei Taiwan Village - 74 km
Ao-hua I-lan Taiwan Village - 76 km
Hsin-tien T'ai-pei Chuan-Shih Taiwan City - 77 km
Kubura Okinawa Japan Village - 78 km
Chin-shan T'ai-pei Taiwan Village - 81 km
Taipei T'ai-pei Chuan-Shih Taiwan Capital 2.5 million people 82 km
Pan-ch'iao T'ai-pei Taiwan Major city - 86 km
Tan-shui T'ai-pei Chuan-Shih Taiwan City - 94 km
San-chih T'ai-pei Taiwan City - 95 km
Lin-kou T'ai-pei Taiwan Village - 96 km

see full list


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
9 0 55 km
Yonaguni OGN 21 Civ. Paved Yes 4900 79 km
Sungshan TSA 6 Civ. Paved Yes 8500 80 km

Ports

Intensity Name LOCODE Country Distance
Suao TWSUO Taiwan 48 km
Keelung (Chilung) TWKEL Taiwan 67 km

Nuclear plants

Intensity Name Country Reactors Distance
LUNG-MEI TAIWAN 2 71 km
KUOSHENG TAIWAN 2 79 km
CHIN SHAN TAIWAN 2 90 km

More information

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