Heavy rain, strong winds to hit much of South Island

MetService has issued a raft of weather alerts for much of the South Island as heavy rain and strong winds hit the country.

Orange heavy rain warnings have been issued today for the headwaters of the Otago and Canterbury lakes and rivers, Westland, Fiordland north of Doubtful Sound, and the ranges of the Buller, Grey and Tasman districts.

MetService said in Otago there may be high river levels or flooding beyond the warning area due to the lingering effects of the recent heavy rain.

It advises people to clear drains and gutters to prepare for heavy rain, avoid low-lying areas and drive cautiously.

An orange strong wind warning has been issued for the lower North Island and the Marlborough Sounds until 10am on Friday as heavy rain moves up the West Coast of the South Island.

MetService has warned Wellington, Wairarapa and the Marlborough sounds of severe gale northwesterlies gusting up to 120kmh in exposed places.

A heavy rain warning is also in place for the North Island's Tararua range for 24 hours from 9pm, with up to 150 millimetres of rain forecast.

Further heavy rain is expected Friday evening and Saturday in some areas.