Wild weather batters NZ overnight

Flooding in Riwaka (Supplied)
Flooding in Riwaka (Supplied)

Wild weather has brought down a tree across a road in Waitakere, West Auckland, and emergency services say it will take five hours to clear.

The fallen tree has also brought down power lines. 

Many people around New Zealand are cleaning up after wild weather battered parts of the country overnight.

MetService says the weather should begin to clear on Friday, with a chance of rain in some parts of the North Island before becoming largely fine across the country on Saturday and Sunday.

In Paeroa, powerlines were pulled from a house by a flying trampoline, the Fire Service tweeted.

The Bay of Plenty Civil Defence is continuing with the monitoring of the weather, due to severe weather warnings still being in place for the region.

Intense rain can be expected in some parts, with a forecast for 40mm of rain per hour expected over the course of the afternoon. Because of this, the Civil Defence is warning its locals to be extremely careful when taking to the roads.

Thunderstorms are also likely this afternoon and evening for both the west and east of the Bay of Plenty.

Civil Defence Emergency Management group controller Clinton Naude, says at this stage all roads remain open, with no reports of flooding.

He says the weather comes as a good reminder to check household provisions are in working order, including torches, extra batteries and other emergency supplies.

A local state emergency was declared in the Franz Josef area after the Waiho River breached its banks.

SEE MORE: State of emergency on West Coast

Despite the rain coming to a halt, nearly 200 people -- including tourists -- have been evacuated from nearby accommodation.

Wild weather batters NZ overnight

Flooding just north of Franz Josef (Dean Trolle)

Two houses have been evacuated, while the rest were motels and hotels.  Nobody has been left in the welfare centre -- that is being manned by Red Cross staff at the moment.

Westland Civil Defence Public Information Manager Andy Thompson says stopbanks are still being rebuilt, and it is going to take some time before they can divert the river.

He said they are trying to shore up a stopbank slightly above the breach so it doesn't get worse, but they are no longer trying to stop the water going through to a nearby hotel, as it is already significantly water-damaged.

Mr Thompson says he has seen water literally flowing through the hotel, high enough to break windows.

The access road to the sewerage ponds is wiped out, as are the sewerage ponds.

While the town sewerage system is still working, when it reaches the end of its pipe it's currently going into the river because the oxidation ponds have been destroyed by the flood.

He says the town itself is very much under control -- but the main issue is a boil water notice, and a portion of the town is without reticulated water.

Mr Thompson says things are desperate.

"Contractors are starting rock protection on the river to try and stop water flowing through the breach in the river bank," he said.

Red Cross has arrived in Franz Josef to assist those forced out of their homes.

At the top of the South Island, Nelson residents are being warned not to swim or collect shellfish from the city's beaches after sewage spilled into the waterways.

Heavy rain overnight caused several sewer pump stations to overflow, and sewage spilled into Nelson Haven - an area of tidal mudflats home to birds and fish.

People have been advised not to swim or collect shellfish at Tahunanui Beach, the Waimea Estuary and Nelson Haven until Sunday morning

Earlier this morning tourists who were trapped by rising water in Motueka were rescued by a local farmer.

They called police earlier to say they were stranded in their campervan near the Riwaka river at the base of Takaka hill, with floodwaters reaching their windows.

Wild weather batters NZ overnight

Flooding in Riwaka (Supplied)

Wild weather batters NZ overnight

Flooded apple orchards in Riwaka (Emily Cooper)

Civil Defence Group controller for the Nelson Tasman region Roger Ball says he hopes the worst of the rain is over.

"Now we've got to let the rivers have a bit of time to flow through, and I think things are going to drop away this morning, but we've got a little to work through yet," he says.

Around 18,000 houses and businesses had their power cut in wider Auckland on Thursday morning after winds gusting up to 110km/h brought trees down on powerlines.

In some cases the damage was done by wind-blown trampolines.

By 10:45am the number without power was down to about 5300.

Crews trying to fix the faults were hampered by high winds, which made it too dangerous to work.

"Each storm has its unique characteristics and this weather event has proven no different. Instead of a few larger outages, this storm has produced smaller, localised outages," Vector spokeswoman Sandy Hodge said.

Wild weather batters NZ overnight

A power pole brought down in last night's storm (Max Molyneux)

Ferry services were cancelled or delayed this morning. Auckland Transport buses replaced all Pine Harbour & Gulf Harbour ferry sailings until further notice.

SEE MORE: Thousands without power after windy night in Auckland

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