M 5.4 in Guam on 16 Apr 2024 14:58 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: 5.4M
Depth: 17.9 Km
Lat/Lon: 12.8885 , 145.4426
Event Date: 16 Apr 2024 14:58 UTC
17 Apr 2024 00:58 Local
Exposed Population: 9 thousand in MMI IV
Source: NEIC us7000mcej
Inserted at: 19 Apr 2024 16:05 UTC
INFORM Coping capacity of the alert score
1.1 (Guam)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NEIC 0 0
us7000mcej 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
1565310 0 16 Apr 2024 14:58 5.6M, 10km 3.41 140 thousand (in 100km) 00:15 PTWC
1565311 0 16 Apr 2024 14:58 5.5M, 10km 3.48 N/A (in MMI>=VII) 00:20 NEIC
1565934 0 16 Apr 2024 14:58 5.4M, 17.9km 3.56 9 thousand (in 100km) 3d 01:06 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 160000 people
75 km no 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
Hagåtña Guam Capital 1000 people 99 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
Andersen AFB UAM 191 0 96 km
A.B. Won Pat International GUM 91 0 96 km

More information

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