Weather Sydney, Melbourne: when the “great polar epidemic” will occur.

A “great polar hotbed” is spreading to Australia, bringing widespread freezing temperatures, heavy rains and damaging winds.

A “great polar outbreak” is spreading to Australia, bringing cold temperatures, heavy rain and damaging winds to most of the country’s southeast.

Sky News Weather chief meteorologist Tom Saunders said the great winter weather system is now set to make its presence felt from Sunday onwards.

He said it will hit mainland Sunday morning, bringing strong southerly winds to the south coast of Western Australia.

From late Sunday night, that front will cover South Australia and begin creeping into Victoria.

“From Monday, the downpours will spread to Victoria and NSW,” he said. “But the strongest winds will hit the coast and mountain ranges of South Australia. We expect strong weather warnings for harmful gusts of wind ”.

He said on Monday there will be noxious gusts spreading across northern southern Australia and western NSW.

He said there will be widespread windy and rainy conditions across most of the nation’s southeast by Monday afternoon, bringing up to 25mm of rain for many areas.

Meanwhile, the snow is now expected to extend into NSW’s central and northern ranges.

Between late Sunday and Tuesday, the system should do it bring strong or gale force winds through NSW, Victoria and Tasmania.

“It is likely that during that time we will have adverse weather warnings for wind gusts damaging parts of the coast and mountain ranges,” he said.

“It’s a very wintry weather pattern with strong westerly winds and widespread showers.”

He said over 50mm of rain is expected for the next seven days along the South Australian coast, the Victorian coast and mountain ranges, and across western Tasmania.

“And it’s not just rain,” Saunders said. “There will be snow and some heavy snow which will develop in the Alps and drop below 1000m on Tuesday.”

There is good news for snow sports enthusiasts as it is expected that up to half a meter of fresh snow will be discharged into the Alps and as it is so late in the fall that it should be cold enough for the next few weeks to form a decent base of winter snow.

La Niña to last until August and spring

The cold front comes when rainy weather is expected to hit Australia and the southern hemisphere, with another weather system brings more rain in winter and spring.

Recent research suggests that there is a “high probability” (62%) of La Niña, which started more than 18 months ago, continuing through June and August, with a 55-60% chance that the event will continue until to spring.

This means Australia could continue to be lashed by above-average rainfall, which has caused disastrous flooding in NSW and Queensland.

It would only be the fourth La Nina triple observed since 1900 and the first time the phenomenon has occurred in 22 years.

Originally published as “Great polar outbreak” will hit Australia from Sunday morning

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