An unsettled start to summer for southeast Australia, but how will it affect New Zealand?


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A frontal system is expected to bring wet and windy conditions across the eastern states towards the end of next week.

A slow moving low pressure trough will continue to bring a peppering of showers and storms to parts of Victoria, New South Wales and southern Queensland over the next few days - especially in the vicinity of the Great Dividing Range. 

This trough will be displaced by a strong frontal system through the course of Friday and Saturday, which has a good chance of delivering widespread rainfall and gusty winds across the southeast.

At this stage, computer models are indicating that many areas will receive more than 25mm of rain from this system, with some of the higher ground of New South Wales and Victoria standing a chance of collecting in excess of 50mm.

In the wake of this system the mercury will take a tumble, as much cooler air from the Southern Ocean is directed across the region. This will be particularly noticeable in Adelaide, Melbourne and Hobart, where much of November has seen sustained above average temperatures.

As with any forecast at this range, the timing and details of this event are likely to change, so keep an eye on the forecast in the coming days.

- by Graeme Brittain, Weatherzone


NEW ZEALAND:
*Long range models indicate this same unsettled weather will reach New Zealand's West Coast around December 5 and 6 bringing the first proper band of rain in almost a month to the region. It remains unclear if this band of rain can also push northwards into the North Island due to the same area of blocking high pressure we have with us this week still in place out to the east by Dec 5. Still a long way to go - but looks like some in the west will get rain. We'll keep you updated on this future rain potential - WeatherWatch.co.nz.



- Image / Forecast Rain Radar for Wednesday December 6th showing rain over the West Coast but high pressure over the North Island blocking it from moving there. It's still too far out to lock in a map like this but an indication of perhaps how this front may travel after it leaves Australia and moves into New Zealand. Keep an eye on our 10 day Forecast Rain Maps for more details. Map by Weathermap.co.nz