Damaging winds of over 100 kilometres per hour are expected across western and central parts of South Australia, and 90 kilometres per hour for Adelaide and the Mount Lofty Ranges from late Monday morning.
The Bureau of Meteorology has issued a severe weather warning for several districts including Adelaide, the Mount Lofty Ranges, Eyre and Yorke peninsulas, Flinders, Mid North, Kangaroo Island, Riverland, the South East and parts of the West Coast, North East Pastoral and North West Pastoral districts.
Senior BOM forecaster Michael Efron told 891 ABC Adelaide some parts of the state, including the West Coast, Eyre Peninsula and Yorke Peninsula could see wind gusts of 100 kilometres an hour.
“Wind gusts of up to 90 kilometres an hour are possible especially this afternoon, into the evening and the early hours of Tuesday,” he said.
Storm clouds over Gilles Plains on Monday afternoon. (Supplied: Julie Lencucha)
A risk of a thunderstorm was also issued for late Monday morning, with 3 millimetres to 10mm of rain expected on Monday, and 5mm to 10mm on Tuesday.
“Do take care if you’re out and about today and tomorrow,” Mr Efron said.
The State Emergency Service said people needed to move vehicles under cover or away from trees and secure loose items around properties.
It also advised people to stay indoors and away from windows while conditions were severe.
Emergency Services Minister Rhiannon Pearce also warned South Australians to “stay alert” and “avoid unnecessary danger” during the severe weather event.
As of 1:40pm, SA Power Networks reported 21 outages were affecting more than 5,800 customers across South Australia.