The low-pressure system is already delivering severe winds and rain to multiple states.

The winds have swept across NSW this morning, already impacting flight operations at Sydney Airport.

“Due to high winds, airport operations may be affected throughout the day,” a spokesperson for the airport said.

“We recommend passengers check the status of their flight with their airline before travelling to the airport and we thank passengers for their patience and understanding.”

Qantas said it was doing everything it could to avoid delays, while Virgin said some flights had been cancelled due to the winds.

North-westerly winds are expected to reach between 20km/h and 30km/h this morning, and will increase to 35km/h before easing this afternoon, according to the Bureau of Meteorology.

In south-eastern Sydney, winds could reach as strong as 50km/h to 60km/h, with damaging gusts up to 90km/h.

Sydney will see a high of 18 degrees today and a low of 12 degrees.

There are also severe wind warnings in place for the Illawarra, South Coast, Southern Tablelands and parts of Mid North Coast, Hunter, Metropolitan, Central Tablelands, South West Slopes, Snowy Mountains, Australian Capital Territory and Northern Tablelands Forecast Districts.

Winds in those regional areas are expected to reach up to 65km/h with gusts over 90km/h.

Newcastle, Wollongong, Goulburn, Nowra, Batemans Bay and Katoomba will all be impacted.

South Australia will also continue to see strong winds this morning, following on from yesterday’s wild weather.

Severe wind warnings are still in place, particularly for those on the coast, including Kangaroo Island and Goolwa.

A small amount of rain is also expected today, following heavy rains and flooding in South Australia yesterday and overnight.

The Adelaide Hills region saw 25mm to 30mm of rain while the CBD saw about 10mm.

The State Emergency Service received 100 calls for help as trees fell and some areas flooded.

The ACT will also experience strong winds and near-freezing conditions, with temperatures as low as 1 degree this morning, and a high of 8 degrees.

Victoria will also be impacted by strong and damaging winds, specifically the East Gippsland, North East, West and South Gippsland, Central and North Central Forecast Districts.

Winds in East Gippsland are expected to hit 60km/h with damaging gusts up to 90km/h.

There will also be 5mm to 15mm of rainfall today, as well as abnormally high tides for the entire Victorian coastline. 

The windy weather across all states is expected to continue across Australia’s southern states until later today, with conditions forecast to ease by tomorrow.