M 4.5 in Indonesia on 11 Apr 2005 21:46 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: 4.5M
Depth: Km
Lat/Lon: -1.64 , 99.87
Event Date: 11 Apr 2005 21:46 UTC
12 Apr 2005 04:46 Local
Exposed Population:
1260000 people within 100km
Source: NEIC
Inserted at: 13 Apr 2005 16:00 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
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
11031 0.5 11 Apr 2005 21:46 4.5M, 30km N/A 1.3 million (in 100km) 1d 18:14 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 Indonesia , Province of Sumatera Barat (population 4,301,938) . The nearest places are Sigoisooinan, Patdarai, Siberimanua, Taigebgem, and Padang.

Radius Population
100 km 1.3 million people
75 km 12000 people
50 km <1000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Sumatera Barat Indonesia 4.3 million people
Jambi Indonesia 2.2 million people
Bengkulu Indonesia 1.3 million people
Riau Indonesia 3.5 million people
Sumatera Utara Indonesia 9.3 million people
Sumatera Selatan Indonesia 6.6 million people
Aceh Indonesia 4.3 million people
Melaka Malaysia 640000 people
Johor Malaysia 2.3 million people

Affected populated places

Name Region Province Country City class Population Distance
Sigoisooinan Sumatera Barat Indonesia Village - 53 km
Patdarai Sumatera Barat Indonesia Village - 64 km
Siberimanua Sumatera Barat Indonesia Village - 65 km
Taigebgem Sumatera Barat Indonesia Village - 69 km
Padang Sumatera Barat Indonesia Major city 830000 people 93 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
Sipora Rokot RKO unknown 0 53 km

Ports

Name LOCODE Country Distance
Telukbayur Indonesia 90 km
Padang (Teluk Bajur), Sumatra IDPDG Indonesia 94 km

More information

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