M 4.8 in Guam on 25 May 2017 17:03 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: 4.8M
Depth: 30.1 Km
Lat/Lon: 13.0534 , 144.6776
Event Date: 25 May 2017 17:03 UTC
26 May 2017 03:03 Local
Exposed Population:
160000 people within 100km
Source: NEIC us10008vcv
Inserted at: 25 May 2017 19:27 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us10008vcv Scaled population (vector) 0  
  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
1168937 0 25 May 2017 17:03 4.8M, 46.77km N/A 160 thousand (in 100km) 01:47 NEIC
1168938 0 25 May 2017 17:03 4.8M, 30.1km N/A 160 thousand (in 100km) 02:23 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 Merizo, Inarajan, Umatac, Talofofo, Ylig, Agat, Santa Rita, Yona, Camp Bright, Lockwood Terrace, and Upi.

Radius Population
100 km 160000 people
75 km 160000 people
50 km 81000 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

Affected populated places

Name Region Province Country City class Population Distance
Merizo Guam Village 1700 people 24 km
Inarajan Guam Village <1000 people 25 km
Umatac Guam Village - 28 km
Talofofo Guam Village 2700 people 34 km
Ylig Guam Village - 37 km
Agat Guam Village 4400 people 37 km
Santa Rita Guam Village 1300 people 38 km
Yona Guam Village 2300 people 40 km
Camp Bright Guam Village - 41 km
Lockwood Terrace Guam Village - 43 km
Camp Quezon Guam Village - 45 km
Piti Guam Village - 45 km
Sinajana Guam Village 2100 people 46 km
Hagåtña Guam Capital 1000 people 46 km
Asan Guam Village - 47 km
Mongmong Guam Village 3700 people 47 km
Barrigada Guam Village 4700 people 47 km
Asbeco Guam Village - 48 km
Tamuning Guam Village 11000 people 48 km
Adacao Guam Village - 51 km
South Acres Guam Village - 52 km
Ipapao Guam Village - 54 km
Harmon Village Guam Village - 54 km
Perez Acres Guam Village - 55 km
Dededo Guam Village 3300 people 56 km
Gayinero Guam Village - 57 km
Spring Hill Subdivision Guam Village - 57 km
Oceanview Guam Village - 58 km
Lupog Guam Village - 59 km
Asatdas Guam Village - 60 km
Potts Junction Guam Village - 62 km
Upi Guam Village - 63 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 49 km
Andersen AFB UAM 191 0 63 km

Ports

Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 44 km
Apra Harbor Guam 45 km

More information

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