Overall Green Earthquake in Tonga on 22 Mar 2026 22:26 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 5.9 in Tonga on 22 Mar 2026 22:26 UTC

2026-03-22 22:37 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 5.7 occurred about 104 miles SOUTH of upolu ISLAND at 1126 am sst on sunday MARCH 22 2026
Based on all available data there is no TSUNAMI threat to AMERICAN SAMOA from this earthquake
Some areas MAY have experienced strong shaking

Measurements Levels

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

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