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Weather: Severe thunderstorm bringing 'very heavy rain' to lash parts of North Island

Author
Benjamin Plummer,
Publish Date
Mon, 4 Dec 2023, 4:26PM

Weather: Severe thunderstorm bringing 'very heavy rain' to lash parts of North Island

Author
Benjamin Plummer,
Publish Date
Mon, 4 Dec 2023, 4:26PM

The North Island is bracing for a raft of severe thunderstorms forecast to bring wet and wild weather from this afternoon.

MetService meteorologist Mmathapelo Makgabutlane says the North Island is set to be the focal point of the week, with intermittent showers forecast.

“Most regions will experience a shower or two, especially in the early part of the week. Tuesday, in particular, seems poised for wet weather in eastern areas like Tairāwhiti/Gisborne and Hawke’s Bay, although not as intense as recent weeks,” Makgabutlane said.

‘Very heavy rain’: Severe thunderstorms form in North Island

MetService has issued a severe thunderstorm watch for the Coromandel Peninsula, Waikato, Taumarunui, Bay of Plenty, Rotorua, Taupo, Gisborne, Hawke’s Bay, Taihape and Wanganui regions which came into effect at 2pm this afternoon.

Localised heavy rain and hail is set to accompany these regions.

“There is a moderate risk some of the thunderstorms could become severe, producing localised downpours of 25 to 40 mm/h,” MetService said.

The watch will remain in effect until 9pm tonight.

Meanwhile, MetService weather radar has detected severe thunderstorms moving to the east southeast, which are expected to lie near Desert Road and the Kaimanawa Mountains in the Taupo, Ruapehu and Rangitikei areas.

“These thunderstorms are expected to be accompanied by very heavy rain,” said MetService.

They are expected to lie over these regions from just before 4pm.

Very heavy rain can cause surface and/or flash flooding about streams, gullies and urban areas, and make driving conditions extremely hazardous.

The National Emergency Management Agency advises that as storms approach you should:

Take shelter, preferably indoors away from windows;
Avoid sheltering under trees, if outside;
Get back to land, if outdoors on the water;
Move cars under cover or away from trees;
Secure any loose objects around your property;
Check that drains and gutters are clear;
Be ready to slow down or stop, if driving.

During and after the storm, you should also:

Beware of fallen trees and power lines;
Avoid streams and drains as you may be swept away in flash flooding.

MetService says thunderstorms are anticipated to resume on Tuesday, with Auckland and Northland likely to experience increased shower activity.

Looking ahead, while Thursday and Friday appear more settled under a ridge of high pressure, warm daytime temperatures may spur afternoon shower activity.

“In the eastern South Island, a temperature dip today will be followed by a recovery on Wednesday, with temperatures expected to reach the low to mid-20s once again,” said Makgabutlane.

In the South Island, a ridge of high-pressure is punctuated by a frontal weather system on Wednesday and Thursday, bringing wet weather to the west and brief showers to lower and eastern parts.

A sunnier outlook is anticipated as the system moves off, providing ample sunshine in time for the end of the working week.

Tropical Cyclone forming in South Pacific

Beyond New Zealand shores, a Tropical Low near the Solomon Islands is expected to intensify into a Tropical Cyclone later this week.

“Impacts to Australia’s East Coast are expected and MetService forecasters are keeping a close eye on the path of the cyclone, especially once it moves away from Australia’s coast,” said MetService.

The season has already brought two severe tropical cyclones: Mal, which reached category 3 strength in mid-November, and last month’s Lola, which briefly became a category 5 system before its remnants caused widespread flooding and power cuts across the upper North Island.

“There’s no indication that we’ll get a tropical cyclone coming toward New Zealand at this stage, but we are flagging a moderate risk of a tropical cyclone, somewhere around that area, from around the middle of the week,” said meteorologist Stephen Glassey.

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