Power was cut to thousands of properties and minor flooding reported in several centres as thunderstorms and rain swept across South Australia.
At one stage on Friday, more than 9000 properties were without electricity, mostly on southern Eyre Peninsula and through the Barossa Valley.
Outages also caused issues for the Royal Adelaide Hospital, where some operations were disrupted and others cancelled.
The Bureau of Meteorology issued a severe weather warning for most of SA for Friday, with the band of storms sweeping through the Barossa and down into Adelaide's northeastern suburbs likely to be the most damaging.
It said rainfall totals of up to 100 millimetres were possible and wind gusts could hit 90km/h, with the rain to continue into Saturday.
Images on social media showed flooding in some centres, including Port Lincoln on Eyre Peninsula, with shops and other buildings appeared to be affected.
On Kangaroo Island, where bushfires recently burnt through more than 210,000 hectares, the storms brought more than 40mm of rain on Friday, likely enough to finally damp down remaining hotspots.
Australian Associated Press