MetService forecasts continuous active weather for eastern and central Aotearoa, before the weather system moves away eastward on Tuesday, taking the wet and windy weather with it.
A complex low pressure system slowly moved across the North Island over the weekend and brought persistent rains over much of the North Island and northeastern South Island, causing surface flooding in places.
MetService meteorologist Mmathapelo Makgabutlane explained: “Parts of Gisborne received around 220mm of rain, while more than 150mm fell in parts of the Coromandel Peninsula, the Hawke’s Bay ranges, up to the greater Wellington area on Saturday and Sunday.
The low continues to break through today (Monday), and the east and lower North Island are still on the way to further heavy rains. Wairarapa sees this risk until tonight, when an orange warning is in effect, while the stretch between the hills of the Wairoa district of Hawke’s Bay south of Gisborne could receive heavy rain tomorrow morning (Tuesday).
“Further rains are expected over areas of Gisborne which experienced heavy rains and flooding over the weekend, but the heaviest rains are expected to be further south, where flooding is also possible,” Makgabutlane commented. .
The eastern South Island, where the weather system also provided heavy accumulations of precipitation, is already on a clearing trend today, while many inland parts of the lower South Island remain under low clouds, as they have been for some time.
The low is also bringing a compression of southeasterly winds to central New Zealand today, where strong wind watches and warnings have been issued. Winds pick up in eastern Bay of Plenty tomorrow before dawn, but the strong wind watch is only valid there until 1 p.m. Tuesday.
The low recedes in the course of Tuesday and is briefly replaced by a high pressure ridge. This sees a period of calmer weather before the next wave of wet weather rolls in the other direction, affecting the western South Island from Wednesday evening.
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