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.

Mw 5.4 Earthquake, Green alert in Tonga on 20 Apr 2017 22:59 UTC
GDACS Event Report - Summary



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

  • Earthquake Magnitude 5.4M, Depth:10km
  • on 20 Apr 2017 22:59 UTC
  • Few people within 100km
  • inserted at 20 Apr 2017 23:18:04 UTC


Known identifiers for this event: us10008jeq (neicid)

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For this events, GDACS has links to information from the following sources: NEIC (8), EMM (1), JRC (71), (2), OCHA (1), INGV (1), WMO (1), USGS (2),

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