More fog expected in Hawke's Bay as flights affected

Fog enshrouds the control tower at Hawke's Bay Airport on Tuesday. Photo / Warren Buckland

Fog which disrupted some air services and spread across Hawke's Bay on Tuesday morning is likely to return in coming days, according to national weather agency MetService.

Air New Zealand media staff in Auckland reported fog in Napier has caused some services through Hawke's Bay Airport to be delayed or disrupted, including one turned-back while in the air.

Flight NZ5025 Auckland to Napier had returned to Auckland and passengers have been rebooked on a later flight.

Two other flights to Napier had minor delays but the fog had lifted and all services were operating by 10am.

While particularly dense in some areas, and spreading across Napier and Hastings, it appeared to have caused few other problems.

Police were unaware of any crashes or other road incidents in the region during the fog.

MetService meteorologist Tom Adams said from Wellington the fog was expected to return on Tuesday night and Wednesday morning.

The minimum temperature in Napier overnight had been 2 degrees Celsius and with moisture in the air it was "the classic recipe" for fog, he said.

Fog has affected some other airports in recent days, with flights in and out of Dunedin on Monday morning among those disrupted.