“Sirens sounded early Saturday morning across Hawaii, warning people of a possible tsunami and telling people to in coastal areas to evacuate.
The sirens sounded at 6 a.m. local time (11 a.m. ET/1600 GMT) to warn of a potential tsunami triggered by a 8.8-magnitude earthquake in Chile.
The siren systems in each county are sounding to ‘to alert residents and visitors to evacuate coastal areas,’ Hawaii’s Civil Defense Division said in a statement.
‘Residents will be advised by their respective country civil defense or emergency management agencies to evacuate coastal areas.'”
(Source: Sirens in Hawaii warn of possible tsunami – CNN.com)