A storm in the Tasman Sea is set to bring a blast of severe weather to the south eastern side of Australia but what does it mean for New Zealand specifically?
For the most part this very large low will be Australia’s problem over the next few days however between this large low and the outgoing high we have an area of convergence (air flows that meet) and this occurs over the upper North Island. On top of that a smaller ‘spin off’ low is approaching the South Island today over the Tasman Sea with a burst of wind and rain.
Generally speaking this weekend the nor’west flow coming out of the storm near Australia plus the sub-tropical north to north east flow coming from the departing high will be meeting over the North Island (or near it – some of the heaviest falls may be just offshore). This means rain will be sub-tropical in nature (so a mix of drizzly spells but also very heavy falls). Due to the slow moving nature of everything these rain bands could cause localised flooding. It will be warmer than average too.
The actual storm itself near Australia won’t even reach New Zealand until the end of Tuesday and likely cross the country on Wednesday – so the rain over the next few days is a bit of a precursor. New Zealand lies halfway between the centre of this low near Aussie and the large high to our east.
NEW ZEALAND HIGHLIGHTS
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