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Tropical Airmass Brings Warmth And Rain

Covering period of Monday 30 October - Friday 3 November

After a wet and windy Sunday and Monday in the upper North Island, MetService is forecasting a warm but active weather week ahead. Meanwhile, things in the South Island remain settled until an approaching low pressure system brings rainfall during the second half of the week.

Wet and windy weather looks set to continue on Monday and Tuesday for the North Island, after parts of Northland and the Coromandel Peninsula recorded 150 to 200 mm of rain in the 24 hours to 9am Monday. Kaikohe had one of the higher accumulations in Northland with 150 mm recorded, nearly a month and a half’s worth of rain in 24 hours.

MetService meteorologist Mmathapelo Makgabutlane elaborates: “The North Island is currently experiencing bands of rain brought on by a deep low pressure system that contains the remnants of Ex-Tropical Cyclone (TC) Lola.”

“As that low slowly continues eastwards, the zones of heaviest rain move along with it, impacting the Bay of Plenty, and later Tairāwhiti-Gisborne and the inland ranges of Hawke’s Bay. Parts of these areas are under Orange Heavy Rain Warning that go into Tuesday. Northland is not completely out the woods, however, and remains under a Heavy Rain Watch until Tuesday morning.”

Strong winds and large waves also featured overnight, with gusts in exposed areas of 120 to 140 km/h and waves of 4.9 metres measured in the Bay of Islands. “While generally windy conditions are still expected, the most damaging of those winds have now passed,” Makgabutlane said.

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As Wednesday rolls on, the widespread rainfall from the low will have eased away, but the North Island and upper South Island, especially inland places, can still expect some showers, some of which could be thundery and heavy. Into Thursday and Friday, the next low pressure system with its associated fronts sweep across the country, bringing rain as they move cross.

Warm temperatures are something to look forward to this week. Most regions reach upper-teens and into the 20s, with Tuesday and Wednesday looking to be the warmest of the lot.

“It will feel quite tropical, warm days and balmy nights for a lot of places. Whanganui reaches 25°C on Tuesday and 24°C in Alexandra. Overnight temperatures remain in the mid-teens for much for the North Island for the early part of this week,” Makgabutlane details.

The timing of these warm temperatures comes as MetService gets ready to commence its Heat Alerts for this season, starting on 1 November. These alerts will warn people in New Zealand of unusually hot weather. Look out for more information regarding this in the coming days.

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