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Spring Equinox Forecast

Spring Equinox Forecast

Posted September 21, 2020

Media Release: MetService NZ

The spring equinox falls on Wednesday this year, and MetService are forecasting this to align with a spell of gales and heavy rain.

MetService meteorologist Tom Adams explains “A classic spring weather pattern consists of high pressure over the upper North Island, and strong westerlies further south. Interspersed in those westerlies are frequent fronts that bring dynamic and changeable weather.”

The front that features this week is due to reach the far south on Tuesday night, but the preceding northwesterlies are likely to reach gale through exposed parts of the eastern South Island and lower North Island on Tuesday. Heavy rain is also expected for the West Coast.

On Wednesday and Thursday, the front progresses north over Aotearoa with winds easing as it passes over the South Island on Wednesday and the North Island on Thursday. Auckland will be spared the wind a little longer, but is still looking at a wet and windy Thursday.

As trees will be starting to sprout fresh spring growth, there is a risk of branches being blown down with possible disruptions to transport and powerlines.

Once the front clears the country showery conditions continue in the west, but the east will fine up nicely. However, this all changes at the weekend, when the next bout of changeable spring weather rolls in.