GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 5.6 in Guam on 16 May 2017 03:56 UTC
GDACS Event Report - Earthquake impact

Earthquake event

Population map close up
Population map close up. (Source: JRC)
Interactive map
  • Magnitude: 5.6 M
  • Depth: 65.48 km (deep)
  • Source: NEIC NEIC us10008snf
  • Location (latitude/longitude): 12.7805, 145.1188
  • Time (UTC): 16 May 2017 03:56:27
  • Time (ECT): 16 May 2017 05:56:27

Event time line

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlertScore DateMag, DepthMax Intensity (MMI*)Pop [100 km or MMI 9-7]Tsunami risk (max height)Delay (hh:mm) Source
1167955 0

Calculation Episode detail

Reference Id Level Score Type Date Added Population
100km or MMI9-7    
Population
20km or Max MMI    
Max Height(m)
Episode 1167955
1 realtime 2017-05-16 06:12:10 No people affected 0
  Earthquake 185816
0 realtime 2017-05-16 06:12:10 No people affected No people affected 0
Close
16 May 2017 03:56 5.5M, 40.3km N/A No people affected 00:15 PTWC PTWC
1167957 0.26

Calculation Episode detail

Reference Id Level Score Type Date Added Population
100km or MMI9-7    
Population
20km or Max MMI    
Max Height(m)
Episode 1167957
1 realtime 2017-05-16 06:18:13 160 thousand 0
  Earthquake 185818
0.26 realtime 2017-05-16 06:18:13 160 thousand No people affected 0
Close
16 May 2017 03:56 5.6M, 65.48km N/A 160 thousand 00:21 NEIC NEIC

(*) Modified Mercalli Intensity Scale

Earthquake impact details

Population

Population near epicenter
Radius Population
100 km 160000 people
75 km 4300 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

The earthquake happened in Guam , of Guam (population 143,173) . The nearest places are Inarajan, and Hagåtña.

Affected provinces

Region Province Country Population
Guam Guam 140000 people
Northern Mariana Is. Northern Mariana Islands 60000 people

Affected Populated Places

See complete places

Name Region Province Country City class Population Distance
Inarajan Guam Village5 <1000 people 68 km
Hagåtña Guam Capital 1000 people 86 km

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Nearby and affected airports
Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
A.B. Won Pat International GUM 91 0 85 km
Andersen AFB UAM 191 0 92 km
Major ports
Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 87 km
Apra Harbor Guam 91 km

More information

Data resources

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

About the data

Disclaimer

While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information. The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.