M 5.5 in Guam on 17 May 2018 18:47 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: 5.5M
Depth: 45.06 Km
Lat/Lon: 13.0097 , 145.3498
Event Date: 17 May 2018 18:47 UTC
18 May 2018 04:47 Local
Exposed Population: 160000 people within 100km
Source: NEIC us1000e7fv
Inserted at: 17 May 2018 20:43 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us1000e7fv Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1210980 0 17 May 2018 18:47 5.5M, 36.99km 3.66 N/A (in MMI>=VII) 00:19 NEIC
1210992 0 17 May 2018 18:47 5.5M, 45.06km 3.61 N/A (in MMI>=VII) 01:56 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 and Hagåtña.

Radius Population
100 km 160000 people
75 km 4600 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Guam Guam 140000 people
Northern Mariana Is. Northern Mariana Islands 61000 people

Affected populated places

Name Region Province Country City class Population Distance
Hagåtña Guam Capital 1000 people 83 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 79 km
A.B. Won Pat International GUM 91 0 80 km

Ports

Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 87 km
Apra Harbor Guam 93 km

More information

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