M 4.6 in British Virgin Is. on 23 Sep 2012 05:34 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: 61.5 Km
Lat/Lon: 19.0184 , -64.6392
Event Date: 23 Sep 2012 05:34 UTC
23 Sep 2012 01:34 Local
Exposed Population:
About 79000 people within 100km
Source: NEIC usc000cucd
Inserted at: 23 Sep 2012 05:55 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000cucd 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
119811 0.5 23 Sep 2012 05:34 4.6M, 61.5km N/A 80 thousand (in 100km) 00:21 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 Virgin Islands, British , of British Virgin Is. (population 18,194) . The nearest places are and Road Town.

Radius Population
100 km 79000 people
75 km 24000 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
British Virgin Is. Virgin Islands, British 18000 people

Affected populated places

Name Region Province Country City class Population Distance
Road Town British Virgin Islands Capital 8300 people 65 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
Anegada NGD unknown 46 km
Beef Island EIS 5 Civ. Paved Yes 3600 64 km
North Sound Virgin Gorda NSX unknown 64 km
Virgin Gorda VIJ 4 Civ. Unpaved No 3100 67 km

Ports

Name LOCODE Country Distance
Anegada Island British Virgin Islands 44 km
Virgin Gorda Island British Virgin Islands 65 km
Road Harbour & Port Purcell British Virgin Islands 67 km

More information

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