Nov 21, 2016

Green earthquake alert (4.9M,depth:99.12km) in Guam at 11/21/2016 7:02:42 PM

Green Earthquake in Guam


Population Density near epicenter (people/km2). Image area: 6x4 decimal degrees (approx. 650x450km2).


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:99.12km
  • 21 Nov 2016 19:02:42 UTC
  • 161625 people within 100km

Whether international humanitarian aid is needed must be decided by an expert.

See the GDACS website for live news coverage (including OCHA Situation Reports), the full earthquake report

For information on emergency response, please consult the GDACS Virtual OSOCC.


Earthquake Event


  • Magnitude: 4.9 M
  • Depth: 99.12 km (deep)
  • Source: NEIC NEIC
  • Location (latitude/longitude): 13.4425, 144.608
  • Time (UTC): 21 Nov 2016 19:02:42
  • Time (ECT): 21 Nov 2016 20:02:42

Earthquake Impact Details

The earthquake happened off shore, near Guam, of Guam (population 143,173). The distance to the nearest coast is 5km. The nearest places are Lockwood Terrace (4km), Camp Bright (6km), Agat (4300 people , 8km), Santa Rita (1200 people , 9km), Piti (9km), and 27 more.

The following vulnerable infrastructure is nearby and may be affected.

For logistics, the following access points are nearby. The nearest airports are A.B. Won Pat International (20km), and Andersen AFB (37km). The nearest ports are Apra Harbor (1km), Apra (Agana) (7km), and Rota (96km).

The maximum altitude nearby is NaNm.

The population near the earthquake is shown in the table below.

Radius Population Density (people/km2)
75 km 160000 people 9
50 km 160000 people 20
20 km 58000 people 46
10 km 13000 people 42



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. Please refer to the GDACS website for subscribing or unsubscribing from the earthquake alert email or SMS service.

Current time zone offset : UTC/GMT +3 hours: