M 5.5 in Taiwan on 22 Apr 2024 20:49 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: 16.8 Km
Lat/Lon: 23.6512 , 121.6062
Event Date: 22 Apr 2024 20:49 UTC
23 Apr 2024 04:49 Local
Exposed Population: 30 thousand in MMI VI
Source: NEIC us6000mt1n
Inserted at: 22 Apr 2024 21:10 UTC
INFORM Coping capacity of the alert score: 3.6 (Taiwan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NEIC 0 0
us6000mt1n Scaled population (raster) 0.48  
  C1 rapid impact -0.59  
  C2 rapid impact 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.82  
Maximum expected impact using different data sources.

The green area correspond to areas affected by strong shaking (MMI VI or higher) according to the simulation.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1566611 0 22 Apr 2024 20:49 5.5M, 16.8km 6.28 N/A (in MMI>=VII) N/A 00:20 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.

Rapid Impact

The results presented below are calculated with the ShakeMap open source software (USGS) using only earthquake hypocenter information to provide a rapid estimation of the ground motion and shaking intensity without taking into account any instrumental observations or earthquake source scaling laws.

Exposed population

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

Intensity Population
31000 people
210000 people

Affected Provinces

Intensity Region Province Population
Taiwan 14000 people
Taiwan 160000 people
Taiwan 46000 people

Affected populated places. Areas of interest

Intensity Name Region Province City class Population Distance
Chia-lu-lan Hua-lien Village - 10 km
Feng-pin Hua-lien Village - 11 km
Shui-lien Hua-lien Village - 16 km
Sha-lao Hua-lien Village - 16 km
Feng-kuang Hua-lien Village - 20 km
Shih-ti-ping Hua-lien City - 23 km
Feng-lin Hua-lien Village - 24 km
Ta-chiang-k'ou Hua-lien Village - 25 km
Feng-shan Hua-lien Village - 26 km
Fu-min Hua-lien Village - 26 km
Ta-lo-ma Hua-lien Village - 29 km
Chang-yüan Hua-lien Village - 30 km
Ch'u-yin Hua-lien Village - 34 km
Sung-pu Hua-lien Village - 34 km
Hua-lien Hua-lien Major city - 36 km
San-li Hua-lien Village - 37 km
Jung-shu Hua-lien Village - 37 km
T'ai-kao-li Hua-lien Village - 40 km
Chia-tsou-wan Pi T'ai-tung City - 40 km
Ta-shan Hua-lien Village - 43 km
Yü-li Hua-lien City - 46 km
Hsin-ch'eng Hua-lien City - 53 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
Hualien HUN 16 Civ. Paved Yes 9000 41 km

Ports

Intensity Name LOCODE Distance
Hualien TWHUN 38 km

More information

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