A national tsunami advisory remains in place for all coastal regions of New Zealand following a powerful magnitude 8.8 earthquake off the east coast of Kamchatka, Russia, at 11.25am today.

No further updates are expected overnight unless there are significant developments Civil Defence said.

The National Emergency Management Agency has warned that strong and unusual currents and unpredictable surges are expected along coastlines, with the first tsunami activity potentially reaching areas around Lottin Point at approximately 11.59pm tonight.

The warning applies to all coastal areas of the North Island, South Island, Stewart Island, Great Barrier Island, and the Chatham Islands.

Authorities are urging people in or near the sea to stay off beaches, out of the water, and away from harbours, marinas, rivers, and estuaries.

“Strong currents and surges can injure and drown people. There is a danger to swimmers, surfers, people fishing, and anyone in or near the water close to shore,” the advisory said.

Those on boats or live-aboards are advised to come ashore and not return to their vessels unless instructed by officials.”

While coastal inundation is not expected, residents in low-lying areas are being asked to exercise caution and follow any instructions from local civil defence authorities. There is no requirement to evacuate unless directed.

People are also being told not to visit the coast to watch the waves, as conditions remain unpredictable and dangerous. The advisory is expected to remain in effect for several hours, and the situation will be reassessed as new information becomes available.

For the latest information, visit www.civildefence.govt.nz.