M 4.6 in Antigua & Barbuda on 12 Feb 2023 19:28 UTC

Hazard models

Rapid Impact
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: 29.242 Km
Lat/Lon: 17.1401 , -61.0571
Event Date: 12 Feb 2023 19:28 UTC
12 Feb 2023 15:28 Local
Exposed Population:
20 thousand in MMI III
Source: NEIC us6000jnha
Inserted at: 12 Feb 2023 21:41 UTC
INFORM Coping capacity of the alert score
1.1 (Antigua & Barbuda)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NEIC 0 0
us6000jnha Scaled population (vector) 0  
  C1 rapid impact 0  
  C2 rapid impact 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1489334 0 12 Feb 2023 19:28 4.6M, 29.242km 2.62 20 thousand (in 100km) 02:12 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 off shore.

Radius Population
100 km 150000 people
75 km 8400 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Affected populated places

Name Region Province Country City class Population Distance
Half Moon Bay Antigua and Barbuda Village - 67 km
Willikies Antigua and Barbuda Village 1700 people 70 km
Saint John's Antigua and Barbuda Capital 22000 people 84 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
V C Bird International ANU 19 Civ. Paved Yes 9000 78 km
La Desirade Les Galets DSD unknown 0 89 km
Barbuda Codrington BBQ unknown 0 92 km

Ports

Name LOCODE Country Distance
Parham Harbour Antigua and Barbuda 78 km
Saint Johns AGSJO Antigua and Barbuda 85 km
Port Louis Guadeloupe 95 km

More information

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