The Bureau of Mereology cancelled the warning early this afternoon after issuing it this morning, with the threat of severe storms said to have passed.
However, a “general severe thunderstorm warning” still remains in place for the Adelaide Metropolitan, Mount Lofty Ranges, Lower Eyre Peninsula, Yorke Peninsula, Kangaroo Island, Murraylands and parts of the Flinders, Mid North, Upper South East and North East Pastoral districts.
SA residents are being advised to keep clear of fallen power lines, beware of fallen trees or debris on the road, not to go through floodwater and to keep clear of creeks and storm drains.
Giant hail and damaging winds have been battering the region, particularly Adelaide’s northern suburbs.
The Department of Education has advised that seven schools and a children’s centre have been forced to close to power outages and flooding.
The wild storms have been sweeping across Adelaide and the Barossa Valley since this morning.
Video has shown hail already blanketing the roads.
Residents have been warned of winds exceeding 90km/h, hail and possible flash flooding.
Footage showed rising water inundating multiple Adelaide businesses.
Authorities have reminded people to be careful on the roads after a woman lost control of her car in Adelaide’s north and it went off the road.
Emergency services are working to free her now.
The system is set to cross South Australia and bring similar weather to western New South Wales, Victoria and Tasmania into this afternoon and tonight.
The Bureau of Meteorology reported that while parts of Sydney would continue to see temperatures of 30C or more, and the east coast of NSW would remain largely dry, “severe” storms could be expected in the west.
The current severe thunderstorm warning for NSW shows the Broken Hill and Wilcannia regions are in the firing line, with damaging winds expected.
Victorians have been warned to expect gusts of up to 100km/h, with flash flooding possible in the state’s south-west.
Weatherzone’s Ben Domensino reported that calmer weather was likely to return on Friday afternoon.
Asthmatics and those who suffer from hay fever are particularly at risk with the strong winds containing high pollen levels.
Residents living in the Mallee region in the north-west and in the Wimmera and the south-east have been told to stay on high alert.