Thousands of people are without power across South Australia and
Adelaide's CBD has been plunged into darkness as a massive storm lashes
the state.
The Bureau of Meteorology (BoM) said the thunderstorms moved in ahead of more significant storms that will hit the EP's south this afternoon, and will also affect the Upper EP and the mid north.
A thunderstorm produced large hailstones at Cleve and 14 millimetres of water in 15 minutes on the EP along with an 87kph gust of wind.
BoM's updated severe thunderstorm warning said the system was likely to produce "destructive winds of up to 140kph" and heavy rain that may lead to flash flooding at locations such as Whyalla, Clare, Maitland, Hawker and Leigh Creek.
Severe thunderstorms are also forecast for Adelaide and the Mount Lofty Ranges.
Lightning has struck across the state ahead of a cold front, including in Adelaide where a tree at Myrtle Bank was struck down by a bolt.
Myrtle Bank resident Emma Altman said the tree fell into her house.
"The tree seems to have exploded and come down into the house taking another tree with it," she said.
"It's gone through our kitchen windows and through a bedroom and taken down the fence."
The Bureau of Meteorology (BoM) said the thunderstorms moved in ahead of more significant storms that will hit the EP's south this afternoon, and will also affect the Upper EP and the mid north.
A thunderstorm produced large hailstones at Cleve and 14 millimetres of water in 15 minutes on the EP along with an 87kph gust of wind.
BoM's updated severe thunderstorm warning said the system was likely to produce "destructive winds of up to 140kph" and heavy rain that may lead to flash flooding at locations such as Whyalla, Clare, Maitland, Hawker and Leigh Creek.
Severe thunderstorms are also forecast for Adelaide and the Mount Lofty Ranges.
Lightning has struck across the state ahead of a cold front, including in Adelaide where a tree at Myrtle Bank was struck down by a bolt.
Myrtle Bank resident Emma Altman said the tree fell into her house.
"The tree seems to have exploded and come down into the house taking another tree with it," she said.
"It's gone through our kitchen windows and through a bedroom and taken down the fence."



