M 4.6 in Guam on 23 Jul 2014 13:57 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: 110.29 Km
Lat/Lon: 13.65 , 144.79
Event Date: 23 Jul 2014 13:57 UTC
23 Jul 2014 23:57 Local
Exposed Population:
177466 people within 100km
Source: NEIC
Inserted at: 24 Jul 2014 05:09 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC -1 -1
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
1055977 -1 23 Jul 2014 13:57 4.6M, 110.29km N/A 180 thousand (in 100km) 15:11 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 Guam , of Guam (population 143,173) . The nearest places are Hag�t�a, Oceanview, and Potts Junction.

Radius Population
100 km 180000 people
75 km 180000 people
50 km 170000 people
20 km 120000 people
10 km <1000 people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Guam Guam 140000 people

Affected populated places

Name Region Province Country City class Population Distance
Oceanview Guam Village - 10 km
Potts Junction Guam Village - 10 km
Hag�t�a Guam Capital 1000 people 21 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 16 km
A.B. Won Pat International GUM 91 18 km

Ports

Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 26 km
Apra Harbor Guam 29 km

More information

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