M 4.9 in Solomon Is. on 21 Sep 2012 11:59 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: 35.1 Km
Lat/Lon: -8.9788 , 157.979
Event Date: 21 Sep 2012 11:59 UTC
21 Sep 2012 22:59 Local
Exposed Population:
About 51000 people within 100km
Source: NEIC usc000ct73
Inserted at: 21 Sep 2012 12:22 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000ct73 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
119769 0.5 21 Sep 2012 11:59 4.9M, 35.1km N/A 50 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 Solomon Islands , of Solomon Is. (population 366,000) .

Radius Population
100 km 50000 people
75 km 34000 people
50 km 17000 people
20 km <1000 people
10 km <1000 people
5 km <1000 people
2 km no people

Affected Provinces

Region Province Country Population
Solomon Is. Solomon Islands 370000 people

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
Sege EGM 3 51 km
Viru QVU unknown 66 km

Ports

Name LOCODE Country Distance
Viru Harbour SBVIU Soloman Islands 63 km

More information

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