Overall Green Earthquake in Tonga on 19 Apr 2026 17:34 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 6.1 in Tonga on 19 Apr 2026 17:34 UTC

2026-04-19 17:42 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 6.1 occurred about 101 miles southwest of savaii ISLAND at 635 am sst on sunday APRIL 19 2026
Based on all available data there is no TSUNAMI threat to AMERICAN SAMOA from this earthquake
Some areas MAY have experienced very strong shaking

Measurements Levels

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

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