The fore office has just been updated its travel advice for tonga, the cook islands, tokelau and niue.
On Tonga, the forign Office Advises anyone on low-ling coastal areas to move immedely to high ground or inland.
It urged people to follow Evacuation Routes and Emergency Instructions From Local Authorities and Not to Return Until “All Clear” Message is Given By the Tonga National Disaster Risk Management Office.
For the other territories.
It added: “Remain Observant and Exercise Normal Caution Near the Sea. Follow Instructions and Advice from Local Authorities.”