Weather: Severe rain warnings for upper South Island as wild summer storm moves down country

The wet and wild weather lashing the Coromandel and Tasman District appears to be moving down the country with MetService issuing severe rain warnings towards the South Island.

A low-pressure system is expected to lie towards the west of Aotearoa on Friday before moving across the North Island over the weekend.

The weather for New Zealand is forecasted to remain unsettled as the weekend approaches with a humid east-to-northeast flow affecting the north of Aotearoa and a southeast flow is expected to strengthen about the east of southern and central parts of the country.

On Thursday MetService issued a heavy rain warning for the Coromandel from 9am Thursday until 12pm on Friday.

MetService Meteorologist Jessie Owen said on Thursday: "While in Northland the worst of the rain has now eased, the Coromandel Peninsula and the Bay of Plenty are in line for a lot more wet weather in the coming days. A further 140 to 200 mm of rain is expected in the Coromandel, and 180 to 240 mm for parts of the Bay of Plenty."

On Wednesday, Civil Defence warned holidaymakers and residents in the Coromandel to find a safe and secure location while the storm passes through.

MetService said the Bay of Plenty and the northern part of Gisborne will experience copious amounts of rain over the next couple of days.

The Tasman District and the Nelson regions have also been forecasted to have lots of rain on Friday. MetService has also issued heavy rain warnings for Bay of Plenty west of Whakatane and north of Rotorua from 9am Thursday until midnight on Friday.

The Richmond and Bryant ranges including the Rai Valley and the Marlborough Sounds have also been upgraded from a heavy rain watch to a heavy rain warning.