Overall Green Earthquake in Tonga on 30 Mar 2025 12:18 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

M 7 in Tonga on 30 Mar 2025 12:18 UTC

2025-03-30 12:29 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.3 occurred in the TONGA ISLANDS at 119 am sst on sunday MARCH 30 2025
Some areas MAY have experienced strong shaking
Based on all available data there is no TSUNAMI threat to AMERICAN SAMOA from this earthquake

Measurements Levels

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

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