M 5.6 in Guam on 22 May 2018 00:26 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: 5.6M
Depth: 15.57 Km
Lat/Lon: 12.9702 , 145.3785
Event Date: 22 May 2018 00:26 UTC
22 May 2018 10:26 Local
Exposed Population: 160000 people within 100km
Source: NEIC us1000e9mu
Inserted at: 22 May 2018 00:44 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us1000e9mu 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.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1211476 0 22 May 2018 00:26 6M, 10km N/A No people affected (in 100km) 00:09 PTWC
1211479 0 22 May 2018 00:26 5.6M, 15.57km 3.58 N/A (in MMI>=VII) 00:18 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 53,833) . The alertlevel for this event is GREEN

Intensity Population
no people
1000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1211479 12.97/145.378 5.6 15.57 3.58 22 May 2018 00:45 00:19 (new episode)
2 0 1211479 12.97/145.378 5.6 15.57 3.58 22 May 2018 02:29 02:03 (upd of #1)

Affected Provinces

Intensity Region Province Country Population
Guam Guam 150000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Inarajan Guam Village <1000 people 77 km
Talofofo Guam Village 2700 people 80 km
Ylig Guam Village - 81 km
Yona Guam Village 2300 people 81 km
Camp Quezon Guam Village - 81 km
Merizo Guam Village 1700 people 83 km
Asatdas Guam Village - 83 km
Barrigada Guam Village 4700 people 84 km
Umatac Guam Village - 85 km
Upi Guam Village - 86 km
Tamuning Guam Village 11000 people 87 km
Sinajana Guam Village 2100 people 87 km
Mongmong Guam Village 3700 people 87 km
Dededo Guam Village 3300 people 87 km
Hagåtña Guam Capital 1000 people 88 km
Santa Rita Guam Village 1300 people 90 km
Agat Guam Village 4400 people 90 km
Asan Guam Village - 91 km
Piti Guam Village - 92 km
Camp Bright Guam Village - 92 km
Rota Northern Mariana Islands Village - 132 km
Teteto Northern Mariana Islands Village - 134 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Andersen AFB UAM 191 0 84 km
A.B. Won Pat International GUM 91 0 85 km
Rota I International ROP 185 Civ. Paved Yes 6000 134 km

Ports

Intensity Name LOCODE Country Distance
Apra (Agana) GUAPR Guam 92 km
Apra Harbor Guam 98 km
Rota Northern Mariana Islands 131 km

More information

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