LIVE COVERAGE

07:30am GMT 

New Zealand issues tsunami activity national advisory for coastal areas

06:07am GMT 

Pacific Tsunami Warning Center issues tsunami advisory for American Samoa

06:05am GMT 

1.2 meter tsunami wave observed at Nuku Alofa in Tonga

05:53am GMT 

Waves have begun reaching coastal roads and structures in parts of Tonga

05:53am GMT 

Tsunami waves have begun reaching the coast of Tonga

05:49am GMT 

Hunga volcano eruption leads to Tonga tsunami warning