South Australia has been pummelled by rain and thunderstorms today, as a trough and associated low pressure system crossed the state. Storm enthusiasts in Port Lincoln were treated to a light show earlier in the day, with an abundant display of lightning. Storms have been fairly widespread, also occurring over the central and northern parts of the state. A severe thunderstorm warning was issued early this afternoon advising that storms were likely to produce damaging wind gusts in excess of 90km/h in the Roxby Downs, Woomera, and Tarcoola areas. This warning has since been cancelled. Heavy rain has also drenched much of the peninsulas and Kangaroo Island. By five o'clock this afternoon, Kadina on the Yorke Peninsula recorded rainfall totals of 17mm and Cleve on the Eastern Eyre Peninsula recorded rainfall totals of 23mm. The low pressure system responsible for the wet and stormy weather is only slowly pushing east, so patchy rain and storms are still on the cards for the central and southeast areas of the state between now and Saturday.