M 4.6 in China on 20 Sep 2020 23:54 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: 4.6M
Depth: 10 Km
Lat/Lon: 22.9442 , 121.6264
Event Date: 20 Sep 2020 23:54 UTC
21 Sep 2020 07:54 Local
Exposed Population:
340000 people within 100km
Source: NEIC us7000bqlw
Inserted at: 21 Sep 2020 00:17 UTC
INFORM Coping capacity of the alert score
3.6 (China)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000bqlw Scaled population (vector) 5.43  
  C1 earthquake 1.39  
  C2 earthquake -0.24  
  Country Vulnerability 0.26  
  INFORM_normalised 0.82  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1333808 0 20 Sep 2020 23:54 4.6M, 10km N/A 350 thousand (in 100km) 00:22 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 , Province of Taiwan (population 22,456,987) . The nearest places are Cheng-kung, Hsin-i, San Hsien Tai, Tu-ho, Nan-liao, Hai-shen-p'ing, Ch'ing-hsi, Wu-shih Pi, Hsin-ch'ang-ts'un, Shui-chui, and Ta-lo-ma.

Radius Population
100 km 350000 people
75 km 270000 people
50 km 84000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Taiwan China 22.5 million people
Okinawa Japan 1.2 million people
Fujian China 33.3 million people
Cagayan Valley Philippines 2.3 million people
Guangdong China 69.6 million people
Zhejiang China 45.9 million people
Ilocos Philippines 3.6 million people
Cordillera Administrative Region Philippines 1.1 million people

Affected populated places

Name Region Province Country City class Population Distance
Cheng-kung T'ai-tung Taiwan City - 33 km
Hsin-i T'ai-tung Taiwan Village - 33 km
San Hsien Tai T'ai-tung Taiwan City - 34 km
Tu-ho T'ai-tung Taiwan Village - 34 km
Nan-liao T'ai-tung Taiwan Village - 35 km
Hai-shen-p'ing T'ai-tung Taiwan Village - 36 km
Ch'ing-hsi T'ai-tung Taiwan Village - 37 km
Wu-shih Pi T'ai-tung Taiwan City - 39 km
Hsin-ch'ang-ts'un T'ai-tung Taiwan Village - 41 km
Shui-chui T'ai-tung Taiwan Village - 45 km
Chia-tsou-wan Pi T'ai-tung Taiwan City - 46 km
Fu-li T'ai-tung Taiwan Village - 47 km
Ch'ih-shang T'ai-tung Taiwan City - 48 km
Chi-hsing T'ai-tung Taiwan Village - 49 km
Kuan-shan T'ai-tung Taiwan Village - 50 km
A-hou-liao T'ai-tung Taiwan Village - 51 km
Yung-kang T'ai-tung Taiwan Village - 51 km
Tai-tung T'ai-tung Taiwan City - 54 km
Cho-ch'ing-ts'un Hua-lien Taiwan Village - 54 km
Yü-li Hua-lien Taiwan City - 54 km
Chang-yüan Hua-lien Taiwan Village - 55 km
T'ai-kao-li Hua-lien Taiwan Village - 56 km
Ch'u-lu T'ai-tung Taiwan Village - 56 km
Ta-chiang-k'ou Hua-lien Taiwan Village - 59 km
Sung-pu Hua-lien Taiwan Village - 60 km
Shih-ti-ping Hua-lien Taiwan City - 61 km
San-li Hua-lien Taiwan Village - 62 km
Hsia-ma T'ai-tung Taiwan Village - 62 km
Ta-nan T'ai-tung Taiwan Village - 64 km
Chien-ho T'ai-tung Taiwan Village - 65 km
Ta-lo-ma Hua-lien Taiwan Village - 66 km

see full list

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Green Island GNI 8 Civ. Paved No 3300 34 km
Taitung TTT 37 Mil. Paved No 11000 49 km
Feng Nin 42 Civ. Paved Yes 7900 58 km

Ports

Name LOCODE Country Distance
Tai Tung Taiwan 61 km
Lan Yu Island Taiwan 99 km

More information

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