VIDEO: NZ & Australia – Rainmakers & high pressure impact both nations next 7 days
28/09/2021 9:32pm
> From the WeatherWatch archives
New Zealand has sub-tropical winds developing this weekend but it’s after a cooler southerly change on Thursday, meanwhile Australia has a large area of low pressure and thunderstorms impacting NSW and QLD while low pressure impact VIC and TAS.
The weather systems across the Tasman are all connected – which is why our forecasts this week are so heavily focused on both New Zealand and Aussie.
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Before you add a new comment, take note this story was published on 28 Sep 2021.
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Warren on 29/09/2021 2:46am
Hi Phil,
Just wondering when we will start to hear more about the weather across the pacific Islands.
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WW Forecast Team on 29/09/2021 7:04pm
Hi Warren, the cyclone season for the South Pacific starts on November 1 and that’s usually when more interesting weather starts to develop up there. Been very quiet for several months now. Cheers, Phil.
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Phil Clements on 28/09/2021 10:34pm
Hi Philip,
Looking at the video forecast for Tuesday there is an area of high pressure south of New Zealand. Is that unusual to have that large an area of high pressure so far south particularly over Antarctica? And therefore what are the effects on the temperatures and on ice sheet – is this also a sign of unseasonal warming in the Antarctic?
On a different note, it is good to finally see a more normal weather pattern across Australia and New Zealand with a mix of high and low pressure instead of the constant high pressure systems that dominated over the last two or three years.
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WW Forecast Team on 28/09/2021 11:59pm
Hi Phil C, thanks for the message and the questions. Spring is a funny time of year as we see winter fading away (storms in the Southern Ocean) and hints of summer coming in (more settling highs over NZ). High pressure can drop down over the Southern Ocean at this time of the year, in fact we get some of our most powerful high pressure zones of the year in September, so this is quite standard – but it would be unusual if it lingered there for weeks. It can also be a bit of a worry when high pressure zones park themselves well south of Australia as they can then transfer heated air from Aussie’s interior and directly dump it over Antarctica. This happened a year or so ago and pushed temperatures in coastal portions of Antarctica to the highest levels ever recorded.
And yes – NZ’s weather pattern feels more normal now, for the first time in over 3 years! However it’s still leaning warmer than average for most places (even if it doesn’t always feel it!).
Cheers
Phil D
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