Millions of Australians will be plunged into an early winter with dangerous winds of up to 102km/h, horizontal rain, and snow in some regions. South Australians will feel the brunt of the cold snap with damaging gusts of more than 100km/h around the south-eastern parts of the state on Monday afternoon, where there is a severe weather warning in place. Adelaide will be slammed by winds peaking over 70km/h in the morning with a wind-chill factor of 13C, but the strongest gusts will be felt on Kangaroo Island, Meningie, Robe, Millicent and Lucindale in the state's south.