The town of Cummins on South Australia's Eyre Peninsula has recorded 37 millimetres of rain within an hour, as thunderstorms sweep across the state. The weather bureau has warned of the likelihood of strong winds, heavy downpours and potential flash flooding over the next few hours.
Senior forecaster Mark Anolak says the storms are likely to continue throughout the state into Thursday. He says significant rainfall is forecast to accompany the storms in some areas.
"With the thunderstorms we are expecting generally five to ten millimetres across eastern parts of the state, probably less than five millimetres over the western parts of the state but in the far east with the thunderstorms, local heavy falls are possible, getting up to 20, 30 millimetres," he said.