M 4.9 in Guam on 27 May 2018 00:12 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: 4.9M
Depth: 35.49 Km
Lat/Lon: 13.0226 , 145.1778
Event Date: 27 May 2018 00:12 UTC
27 May 2018 10:12 Local
Exposed Population:
160000 people within 100km
Source: NEIC us1000ecug
Inserted at: 27 May 2018 00:44 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us1000ecug Scaled population (vector) 4.91  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1212096 0 27 May 2018 00:12 4.9M, 35.49km N/A 160 thousand (in 100km) 00:31 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 Inarajan, Talofofo, Ylig, Yona, Merizo, Asbeco, Camp Quezon, Adacao, Umatac, Gayinero, and Upi.

Radius Population
100 km 160000 people
75 km 160000 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
Inarajan Guam Village <1000 people 55 km
Talofofo Guam Village 2700 people 59 km
Ylig Guam Village - 60 km
Yona Guam Village 2300 people 61 km
Merizo Guam Village 1700 people 61 km
Asbeco Guam Village - 61 km
Camp Quezon Guam Village - 62 km
Adacao Guam Village - 62 km
Umatac Guam Village - 63 km
Gayinero Guam Village - 64 km
Perez Acres Guam Village - 64 km
Barrigada Guam Village 4700 people 64 km
Lupog Guam Village - 65 km
Ipapao Guam Village - 65 km
South Acres Guam Village - 65 km
Spring Hill Subdivision Guam Village - 66 km
Asatdas Guam Village - 67 km
Sinajana Guam Village 2100 people 67 km
Tamuning Guam Village 11000 people 67 km
Mongmong Guam Village 3700 people 67 km
Hagåtña Guam Capital 1000 people 68 km
Santa Rita Guam Village 1300 people 68 km
Agat Guam Village 4400 people 69 km
Dededo Guam Village 3300 people 69 km
Harmon Village Guam Village - 69 km
Upi Guam Village - 70 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
A.B. Won Pat International GUM 91 0 66 km
Andersen AFB UAM 191 0 68 km

Ports

Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 71 km
Apra Harbor Guam 76 km

More information

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