M 4.6 in Guam on 19 Dec 2016 02:29 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This is a preliminary assessment. The final GDACS Alert Level has been/will be published using more detailed information.

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 4.6M
Depth: 121.37 Km
Lat/Lon: 13.8463 , 144.9588
Event Date: 19 Dec 2016 02:29 UTC
19 Dec 2016 12:29 Local
Exposed Population:
162777 people within 100km
Source: NEIC us200082gq
Inserted at: 19 Dec 2016 02:58 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC n.a n.a
us200082gq Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1151168 n.a 19 Dec 2016 02:29 4.6M, 121.37km N/A 160 thousand (in 100km) 00:28 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 Upi, Potts Junction, Asatdas, Lupog, Oceanview, Spring Hill Subdivision, Gayinero, Dededo, Perez Acres, Songsong, and Umatac.

Radius Population
100 km 160000 people
75 km 160000 people
50 km 130000 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
Upi Guam Village - 29 km
Potts Junction Guam Village - 30 km
Asatdas Guam Village - 32 km
Lupog Guam Village - 34 km
Oceanview Guam Village - 34 km
Spring Hill Subdivision Guam Village - 35 km
Gayinero Guam Village - 36 km
Dededo Guam Village 3300 people 36 km
Perez Acres Guam Village - 37 km
Songsong Northern Mariana Islands Village 1300 people 38 km
Ipapao Guam Village - 38 km
Harmon Village Guam Village - 38 km
South Acres Guam Village - 40 km
Adacao Guam Village - 41 km
Rota Northern Mariana Islands Village - 43 km
Teteto Northern Mariana Islands Village - 44 km
Asbeco Guam Village - 44 km
Tamuning Guam Village 11000 people 45 km
Barrigada Guam Village 4700 people 45 km
Sinapalo Northern Mariana Islands Village - 46 km
Mongmong Guam Village 3700 people 47 km
Camp Quezon Guam Village - 48 km
Hagåtña Guam Capital 1000 people 48 km
Sinajana Guam Village 2100 people 48 km
Asan Guam Village - 49 km
Piti Guam Village - 52 km
Yona Guam Village 2300 people 53 km
Ylig Guam Village - 56 km
Lockwood Terrace Guam Village - 57 km
Camp Bright Guam Village - 58 km
Talofofo Guam Village 2700 people 59 km
Santa Rita Guam Village 1300 people 60 km
Agat Guam Village 4400 people 61 km
Inarajan Guam Village <1000 people 67 km
Umatac Guam Village - 68 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 29 km
A.B. Won Pat International GUM 91 0 44 km
Rota I International ROP 185 Civ. Paved Yes 6000 47 km

Ports

Name LOCODE Country Distance
Rota Northern Mariana Islands 38 km
Apra (Agana) GUAPR Guam 54 km
Apra Harbor Guam 58 km

More information

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