Perth, Melbourne, Sydney: Weather Forecast: ‘Exceptionally Hazardous’ Weather Conditions

A brutal double whammy weather system will hit across Australia this week, bringing “exceptionally dangerous” conditions in some areas.

Huge waves, hundreds of millimeters of rain, flash floods and gale-force winds are all on the cards. And it won’t be a flash in the pan as the slow system will potentially last all week.

As many as six states could be hit by Western Australia and parts of Tasmania, Victoria and New South Wales, especially in the line of fire.

“An extended spell of rain and wind will impact southern Australia this week as a series of powerful cold fronts sweep across the country,” said Jonathan Howe of the Bureau of Meteorology.

“There is a very large mass of cold and unstable air over the Southern Ocean. And it is this entire complex that will move north and bring these wet and windy conditions to the rest of southern Australia.”

weather news senior meteorologist Tom Saunders said the system has two key features.

“Firstly, it moves slowly, so it will take a whole week to move from the south of Western Australia to the southeast.

“Therefore, due to the slow movement of the system, this is not just a few hours of serious weather for Western Australia, three days.

“Secondly, it’s a powerful system with strong to gale-force winds.”

One front will move at the beginning of the week and another a couple of days later, which could lead to even more rainfall.

“Exceptionally Hazardous” Conditions

A severe weather warning is in effect for southern Western Australia including Perth, Albany, Kalgoorlie and Esperance.

Until Wednesday, a series of strong cold fronts will pass through the south of the state, which will bring showers, thunderstorms, wind gusts over 90 km / h, in some places up to 110 km / h.

This can result in damage to homes and property.

Up to 15mm of rain is expected in Perth on Tuesday and up to 20mm on Wednesday with possible storms. Humidity will then decrease and then rise again over the weekend.

But the further south you go, the wetter it will get: Albany will have around 60mm between Tuesday and Thursday, and in parts of Western Australia it will be as high as 100mm to the north.

Another problem with this system is the height of the waves.

“Due to the duration of these coastal storms, we are seeing massive seasonal waves,” Sky’s Mr. Saunders said.

“Cumulative wave heights can exceed 10 meters and coastline erosion warnings are in place initially for the west coast, but then extending to parts of southern Western Australia as well by midweek.

“The absolute maximum waves from the system are likely to exceed 15 meters, so the conditions are exceptionally dangerous,” he said.

The system moves to the east coast

Strong winds and intermittent rain will begin to be felt in South Australia early on Tuesday morning, spreading to Victoria and Tasmania by the end of the day and early Wednesday, and then to parts of New South Wales.

Up to 10mm of rain could fall in Adelaide on Tuesday with potentially dangerous winds and late morning thunderstorms.

Rain but less on Wednesday and then a front on Thursday and Friday resulting in about 25mm of rain in those two days.

A severe weather warning is in effect for all of South Australia except in the north of the state and the far east around Remarque. Destructive wind gusts up to 90 km/h are possible.

Partially clear in Melbourne on Tuesday before wind picks up tonight. Until the end of the week, rain can be expected, but the total amount of precipitation will be below 10 mm every day.

A severe weather warning for central parts of the state, including Warrnambool, Ballarat and Falls Creek, has reported wind speeds between 65 and 100 km/h since Tuesday evening.

Partly cloudy in Hobart on Tuesday with intermittent showers from Wednesday onwards.

Further north, conditions will be much more dramatic, with Devonport expecting 30 to 45mm of rain on Wednesday alone and another 15mm on Thursday.

“Heavy rains will intensify in the southern Murray Basin on Wednesday and Thursday, and by Thursday or Friday evening they will also reach the northern parts of New South Wales,” Mr. Saunders said.

Areas on both sides of the Victoria/New South Wales border could be hit starting mid-week. Calm conditions are expected in Canberra on Tuesday, then more rainfall on Wednesday and then a 50-70mm drop on Thursday as this system, coming from Western Australia, finally reaches the capital. Thunderstorms are also possible.

Albury-Wodonga could see 15-25mm of rain on Wednesday and then 20-35mm on Thursday. Get ready for a possible 65mm humidity in Wagga Wagga on Wednesday and Thursday.

Sydney won’t see the worst effects of rain, with some showers on Thursday followed by mostly sunny skies and 22C highs.

More precipitation is likely west of the ridges, with Tamworth forecasting 50mm Thursday through Friday.

Some of this rain will extend into Queensland, especially near the border, and St. George’s could see 8-15mm of rain on Friday.

A bit damp for Brisbane with a mostly good week of mid-twenties highs. On Friday, the temperature can reach 27 degrees. But it’s going to rain over the weekend.

Dry weather with no rain in Darwin and high 31C next week.

Originally published as ‘Exceptionally dangerous’ conditions as double strike weather system ready to strike