M 5.6 in Antigua and Barbuda on 17 Apr 2017 05:23 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: 5.6M
Depth: 21.11 Km
Lat/Lon: 17.4756 , -61.1385
Event Date: 17 Apr 2017 05:23 UTC
17 Apr 2017 01:23 Local
Exposed Population: About 90000 people within 100km
Source: NEIC us10008iaa
Inserted at: 17 Apr 2017 05:42 UTC
INFORM Coping capacity of the alert score: 3.6 (Antigua & Barbuda)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.1 0.1
us10008iaa Scaled population (vector) 0  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1164257 0.1 17 Apr 2017 05:23 5.6M, 21.11km 3.76 90 thousand (in 100km) 00:18 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 Antigua and Barbuda ,of Antigua & Barbuda (population 39) . The alertlevel for this event is Green

Intensity Population


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1164257 17.476/-61.138 5.6 21.11 3.72 17 Apr 2017 05:42 00:19 (new episode)
2 0 1164257 17.476/-61.138 5.6 21.11 3.76 17 Apr 2017 07:24 02:01 (upd of #1)

Affected Provinces

Intensity Region Province Country Population
Antigua & Barbuda Antigua and Barbuda <1000 people


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
Barbuda Codrington BBQ unknown 0 70 km

More information

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