M 4.9 in China on 21 Nov 2012 22:25 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: 4.9M
Depth: 22 Km
Lat/Lon: 23.9782 , 122.341
Event Date: 21 Nov 2012 22:25 UTC
22 Nov 2012 06:25 Local
Exposed Population:
510000 people within 100km
Source: NEIC usc000dwka
Inserted at: 21 Nov 2012 23:05 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000dwka Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
121003 0.5 21 Nov 2012 22:25 4.9M, 22km N/A 510 thousand (in 100km) 00:39 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 and Hua-lien.

Radius Population
100 km 480000 people
75 km 87000 people
50 km no 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
Zhejiang China 45.9 million people

Affected populated places

Name Region Province Country City class Population Distance
Hua-lien Hua-lien Taiwan Major city - 76 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
Hualien HUN 16 Civ. Paved Yes 9000 74 km
Yonaguni OGN 21 Civ. Paved Yes 4900 84 km

Ports

Name LOCODE Country Distance
Hualien TWHUN Taiwan 73 km
Suao TWSUO Taiwan 85 km

Nuclear plants

Name Country Reactors Distance
LUNG-MEI TAIWAN 2 80 km

More information

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