Source: Bureau of Meteorology

For people in the Murraylands, Upper South East, Lower South East and parts of the Mount Lofty Ranges and North West Pastoral districts.

Issued at 1:57 pm Thursday, 20 April 2017.

Thunderstorms are occurring in parts of the state.

In the south of the state severe thunderstorms are likely to produce heavy rainfall that may lead to flash flooding in the warning area over the next several hours. Locations which may be affected include Murray Bridge, Meningie, Mount Gambier, Naracoorte, Lameroo, and Bordertown.

In the North West Pastoral district thunderstorms are likely to produce heavy rainfall that may lead to flash flooding, damaging wind gusts in excess of 90 km/h in the warning area over the next several hours. There is also a chance of large hail with these thunderstorms. Locations which may be affected include parts of the Great Victoria Desert.

The State Emergency Service advises that people should:
* Secure or put away loose items around your property.
* Move cars under cover or away from trees.
* Keep clear of fallen power lines.
* Don't drive, ride or walk through flood water.
* Keep clear of creeks and storm drains.
* Stay indoors, away from windows, while storms are nearby.