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Wild weather: Homes evacuated, roads closed in Buller district, West Coast

More than 600 homes have been evacuated in Westport as the Buller River threatens to breach its banks.

In the South Island, more than 600 homes have been evacuated in Westport as the Buller River threatens to breach its banks.

Red warning for heavy rain in parts of Westland and Buller.

The red warning for heavy rainfall in parts of Westland and Buller will last until 8pm. Photo: MetService

Voluntary evacuation advice became a mandatory order overnight for people in low-lying parts of Westport, as heavy rain caused surface flooding and slips.

About 800 people have spent the night in welfare centres evacuated from their homes in Westport while authorities wait for daylight to check the damage.

Region emergency controller Bob Dixon said plans were in the works for evacuees to return home.

"Presently monitoring river levels - they are still extremely high. We're just waiting to see what homes may have water in them. We certainly know there are properties that have water around them.

"Our plan presently is that we are looking at homes that have escaped any water entering the properties and we'll start to progressively get those folk to return home."

People in Westport are being asked not to go out driving around looking at damage because they could send water into homes.

Road closures

Numerous roads leading to the West Coast are closed because of slips and flooding.

They include State Highway 73, Arthur's Pass to Kumara; State Highway 6, Westport to Rapahoe; State Highway 7, Ikamatau to Stillwater and Waipara to Springs Junction and at Mt Culverden, near the intersection with Leslie Hills Road.

An update is expected later this morning.

CANTERBURY & WEST COAST - SEVERE WEATHER - 7:55AMSH6 Inangahua to Lower Buller Gorge & SH7 Ikamatua to Stillwater remain CLOSED due to flooding. SH6 Westport to Rapahoe, SH7 Lewis Pass & SH73 Arthurs Pass to Jacksons are CLOSED due to slips. Please DELAY your journey. ^AL

— Waka Kotahi NZTA Canterbury & West Coast (@WakaKotahiCWC) July 16, 2021
Red warning for Westland and Buller remains

Heavy rain is causing surface flooding and slips all along the West Coast.

The Buller District is in a state of emergency as rain hammers the region, pushing the river to near-bursting point running at 11m high.

Forecasts say there is still up to 150 millimetres in the ranges, and 70 to 100 millimetres closer to the coast, is yet to fall during this event.

The red warning for heavy rainfall in parts of Westland and Buller will last until 8pm Saturday.

RED WARNING still active for Buller and N Westland, until 8pm Sat eve. 400mm in 24hrs already recorded in the ranges there, still raining. Orange Warnings Nelson and Marlborough Ranges, Southern Westland & Canterbury Headwaters. Details: ^RK

— MetService (@MetService) July 16, 2021

One school hall in Westport is full of evacuees, and civil defence and army staff have been directing people to other shelters as required.

Buller Mayor Jamie Cleine said four of the seven shelters were full and there was currently no way out of the township by road.

"The Buller Gorge is closed now with river over the road in various places. The coast road south to Greymouth is closed with slips. So we're locked in."

Cleine said it had been a long night for officials monitoring the West Coast floods.

Buller Emergency Management, in a social media post said: "The decision to evacuate was made because the Buller River received an extreme amount of rainfall over the last 24 hours and is still extremely high.

There is still a large amount of water in the ranges to make its way down the Buller River.

"We ask people to stay away from their homes while the risk remains. We will let you know when it is safe to return home."

'Persistent, extremely heavy rainfall'

A climate station in the Hokitika catchment has recorded 622 millimetres of rain, in the 42 hours to 10pm last night.

Niwa says the reading at Cropp Waterfall is equivalent to 51 percent of Auckland's normal annual rainfall.

MetService duty forecaster Karl Loots said it was a significant downpour.

He said it was a strong front lying across northern Westland and Buller.

"That is very exceptional, what we have see over the last 60 hours across much of the West Coast and Buller. It's been really persistent, extremely heavy rainfall. Just in the last 24 hours, we've seen numerous stations through these regions reporting upwards of 250-300mm of rain."

Last night a slip at Meybille Bay closed State Highway 6 between Westport and Punakaiki until further notice.

SH6 is also closed from Westport to Inangahua due to flooding of the Buller River, and east of Inangahua, where a detour is in place via Browns Creek Road.

Several other roads are down to one lane due to minor slips or surface flooding.

The Transport Agency is urging people to stay off the road unless absolutely necessary.

In Canterbury

Environment Canterbury has issued a flood warning, with rivers in the region running high.

It said heavy rain had fallen along the main divide overnight, flowing into the Ashburton, Selwyn and Ashley catchments.

The Orari River is rising and engineering staff will monitor it during the day to make sure areas where repair work was carried out after the flood in May, have stood up to the increased flow.

The Rangitata River is expected to keep rising during the day and the Ashburton River is running high and has overflowed in the North Branch into areas affected by the recent flood.

Landowners adjacent to Canterbury rivers are being advised to monitor the situation for flooding and take action sooner rather than later.

In Wellington

Strong winds are disrupting flights entering and leaving the capital.

A large section of a roof came off a four flat complex in Newtown and six people have evacuated.

MetService has issued a strong wind warning for the region with gusts up to 140km/h in exposed places.

There is also a heavy rain watch for the area with surface flooding in some parts of the city.

In Wairarapa, a conservatory was damaged by high winds and a tree fell over a driveway.

Firefighters and councils have also been responding to sparking powerlines and uprooted trees.

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