Source: Bureau of Meteorology

For people in Adelaide Metropolitan, Mount Lofty Ranges, Eastern Eyre Peninsula, Yorke Peninsula, Flinders, Mid North and parts of Riverland, Murraylands, North West Pastoral and North East Pastoral districts.

Issued at 12:49 pm Friday, 20 December 2019.

Thunderstorms are developing over parts of the warning area and are likely to be severe producing damaging wind gusts in excess of 90 km/h during this afternoon.

Locations which may be affected include Adelaide, Whyalla, Port Augusta, Port Pirie, Clare, Maitland, Murray Bridge, Roxby Downs, Leigh Creek, Hawker, Jamestown and Woomera.

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.
* Stay indoors, away from windows, while storms are nearby.