WELLINGTON: The number of people missing in New Zealand's Hawke's Bay following Cyclone Gabrielle is now in single figures, search and rescue officials said on Thursday, 10 days after the worst storm to hit the country in decades tore through the region.

Gabrielle killed at least 11 people and caused widespread damage across the North Island, hitting the farming, wine- and fruit-growing Hawke's Bay on the east coast particularly hard.

Hawke's Bay Urban Search and Rescue (USAR) team leader Ken Cooper told TVNZ's Breakfast show that search and rescue conditions were arduous.

"It's something that I've never seen before, very challenging for our search crews and the community, however it's the responsibility of our crews and we'll carry out those searches to the best of our ability," Cooper said.

As of Thursday morning, "we are down to single figures" in terms of the numbers of people still unaccounted for in Hawke's Bay, he added.

USAR teams together with police and dog units were searching several remote communities on Thursday, Cooper said.

New Zealand Police said on Thursday there were 152 people across the country who had been reported as unable to be contacted, down from more than 5,000, as communications were gradually restored.