Overall Green Earthquake alert in Tonga on 23 Dec 2018 23:08 UTC

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.

M 6.4 in Tonga on 23 Dec 2018 23:08 UTC

2018-12-23 12:09 message from NTWC

Key information extracted from original GTS message :

Evaluation

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

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