Severe Weather Update Sunday 1 September 2024: Severe weather continues for the south-east.

Published: Aug 31, 2024 Duration: 00:04:29 Category: Science & Technology

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Hello from the Bureau with an update on the severe weather that's buffeting south-eastern parts of the country. Now, we've had a series of cold fronts that have moved across this weekend and brought some really damaging and destructive winds to the area. And we have another one on its way tonight. Now we're forecasting the winds to re-intensify about south-eastern parts of South Australia this afternoon, and then to continue to re-intensify as the cold front moves eastwards. Now, damaging winds are possible anywhere within this, coloured area and that winds in excess of 90 km/h and over 100 km/h for Tasmania. However, there's also the risk of locally destructive - so winds in excess of 125 km/h - about the west coast and central coast of Victoria, including the Bellarine Peninsula and the south-eastern suburbs of Melbourne. Also, the north-east ranges of Victoria may also have the locally destructive winds and the west and north coast of Tasmania. Now those winds are expected to gradually ease from the west as the cold front tracks eastwards, and it's in the early hours of tomorrow that the winds about the east coast of New South Wales were really start to increase. So that's places like the Illawarra, the Sydney Metropolitan and the Hunter. Now winds of these strengths do have the potential to bring down both trees and branches that may cause property damage, also bring down power lines that could lead to power outages and also loose objects may be blown around and cause further damage. So let's take a look at the front and how it moves through. So here we can see it approaches the south-east, reaching the far south-east during later this evening. And we're forecasting it to move through the Melbourne area somewhere between 2 am and 4 am. Now we're expecting a line of showers and thunderstorms to form along that frontal band. Much colder conditions behind the front though, with the potential for small hail and as well snow down to low levels. So just having a look at that, seeing it scoot across out into the Tasman Sea, clearing during Monday with an easing of the showers gradually as this high pressure system here moves in and sees a return of the settled and clear weather by Tuesday. So how much rainfall are we expecting? Here we're taking a look at the accumulated rainfall. So that's between now and Monday 6 pm. You can see the heaviest rainfall is expected in the westerly flow about western parts and northern parts of Tasmania, where they may see a further 50 mm. Looking at Victoria, however, the heavier rainfall totals are expected on and south of the ranges, with the potential of 5 to 15 mm and isolated totals higher than this. Now, Tasmania has seen a lot of showers and rain over the past week with a series of cold fronts, and it has led to really swollen river systems. There are a number of Minor to Moderate Flood Warnings current and even a Major Flood Warning for the Derwent. And that's the Derwent is expected to peak later this afternoon at the major flood level. However, there is a broader blue area here, a broader Flood Watch, and that is due to the ground being so primed that any further rainfall could lead to a really quick response from the catchments. So, apart from the wind, there has been very large and powerful waves that have been generated by this vigorous westerly flow. And we're, expecting seas to peak tomorrow afternoon between 7 to 9 m off the west coast of Victoria and Tasmania. Now, there are also abnormally high tides that are expected to peak on Monday. And especially through the Port Phillip Bay, Western Port and Lakes Entrance, we're forecasting the tides to potentially lead to inundation of low lying areas. So if you or anyone you know lives across south-eastern parts of the country, it's important they stay up to date with our latest warnings via the Bureau website, the app or social media. And as always, listen to the advice from the your local emergency services. Bye for now.

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