Weather: Heavy rain watches in place as the storm prepares to roll on Friday

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Breathe when the rain stops, as there is now a larger system in its path, with the already soaked northern regions facing it first.

MetService has issued a severe weather watch for seven parts of Aotearoa that it says will be hardest hit by what is expected to be widespread rain late Thursday and a particularly wet Friday.

A deep depression, associated with fronts and troughs, is expected to approach New Zealand from the northern Tasman Sea on Thursday, then across the country on Friday, according to MetService.

A heavy rain watch has been issued by forecasters saying Northland and Coromandel will bear the initial brunt of wet conditions.

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MetService predicts Northland could experience heavy rain with the possibility of thunderstorms over a 25-hour period from 11 a.m. Thursday to noon Friday, where rainfall amounts could approach warning criteria.

“This could be a significant event, and people are advised to keep up to date with the latest forecast as some parts of the watches are likely to be upgraded to warnings, and other areas will likely be added to the watch. or warning,” MetService said. .

MetService predicts Northland could experience heavy rain with the possibility of thunderstorms over a 25-hour period beginning at 11 a.m. Thursday.

KATHRYN GEORGE / Stuff

MetService predicts Northland could experience heavy rain with the possibility of thunderstorms over a 25-hour period beginning at 11 a.m. Thursday.

MetService meteorologist Dan Corrigan said a “decent dose” of between 55 and 70 millimeters of rain had fallen on beaches east of Ōpōtiki and in Hicks Bay since Tuesday afternoon, while Northland had seen up to 46mm of rain in the 24 hours at 6am. Wednesday – recorded in Parapara northeast of Kaitaia.

The majority of Northland and Auckland had seen between 30mm and 45mm of rain in 24 hours.

Corrigan said Tuesday’s rainmaker would continue to hang around and bring squally rain to the Far North districts before “looping off” the system’s new building in the northern Tasman Sea.

This system would move through Northland, the western parts of the North Island from Auckland to Taranaki, and Buller on the west coast on Thursday, before sweeping all of Aotearoa on Friday.

“Friday is shaping up to be a rainy day for everyone – it’s going to be wet everywhere.”

Friday’s rain could exceed warning criteria in five regions, prompting five new heavy rain watches.

Severe weather could hit the Bay of Plenty, including Rotorua and in the Gisborne Ranges north of Ruatoria, the area around Taranaki Maunga, Tasman west of Motueka, Buller and Westland, MetService said.

Corrigan said once the low is established, it will bring potentially strong winds and drop temperatures.

This meant there was also a chance of heavy snow in the South Island high country over the weekend, particularly on the higher roads and passes.

Strong northwesterly gales are possible for exposed parts of Wellington, Horowhenua, Kāpiti Coast, Wairarapa and Hawke’s Bay south of Hastings on Friday and Saturday and even exposed parts of Taranaki, Taihape and Bay of Plenty to the north .

MetService predicts rainfall amounts could exceed warning criteria on Friday night in Bay of Plenty where periods of heavy rain are expected to fall.

Most of the rain in the south is likely to be more persistent on the west coast, although many eastern parts of the South and North Islands will also see a dollop of rain on Friday.

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