What was
described by the Bureau of Meteorology as a mid-latitude cyclone hit SA during September and created tornadoes that knocked over
more than 20 transmission towers and resulted in a state-wide blackout.
BOM also released a report today confirming at least seven tornadoes touched down on September 28, an outbreak caused by multiple supercell thunderstorms.
Winds of up to 260 kilometres per hour were recorded with sheds destroyed and a caravan overturned in the state's Mid North.
One tornado lasted for 25 minutes and travelled about 23 kilometres, while another lasted 20 minutes and travelled 30km.