M 4.9 in Tonga on 17 Sep 2017 20:29 UTC

Event summary

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

GDACS ID EQ 1121689
Earthquake Magnitude: 4.9M
Depth: 129.26 Km
Lat/Lon: -18.9829 , -174.9501
Event Date: 17 Sep 2017 20:29 UTC
17 Sep 2017 08:29 Local
Exposed Population:
About 500 people within 100km
Inserted at: 17 Sep 2017 20:59 UTC
INFORM Coping capacity:
1.1 (Tonga)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us2000apkx Scaled population (vector) 1.91  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Detailed event map. European Union, 2024. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

Articles: 232 | About casualties: 4 | Last hour: 0

¿Qué son los tsunamis y cómo se forman?Thu, 21 Sep 2017 19:46:00 +0200.

Un tsunami es una serie de olas provocada por un brusco movimiento en el fondo del mar: sismo , erupción volcánica, avalanchas submarinas o incluso la caída de un asteroide en el agua. Pero los más usuales son provocados por un choque sísm
...(more)
Une Châtelleraudaise au cœur des secours à Saint-MartinThu, 21 Sep 2017 19:23:00 +0200.

Partie la semaine dernière à Saint-Martin, Magalie Brossard, secouriste à la Croix-Rouge de Châtellerault, témoigne de l'ambiance et des opération sur place. Partie le 13 septembre en direction de Pointe-à-Pitre, la secouriste de la Croix-
...(more)
Earthquake PWS test failed to reach some cellphonesThu, 21 Sep 2017 19:19:00 +0200.

The Central Weather Bureau yesterday sent a test warning message to cellphone users nationwide at 9:21am to test the one-to-many cell broadcast service to mark National Disaster Prevention Day and the 18th anniversary of the 921 Earthquake.
...(more)
MGP Tsunamis: aplicación te alerta si estás en una zona de peligroThu, 21 Sep 2017 19:13:00 +0200.

. La Marina de Guerra desarrolló un sistema de alerta indispensable ante desastres naturales. MGP Tsunamis, la aplicación para prevenir desastres. La Marina de Guerra del Perú informó a los ciudadanos sobre una aplicación que les advertir
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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (41), (3), NEIC (4), OCHA (1), INGV (1), WMO (1), INFORM (2), USGS (2),