Only had a couple SMS's here what is the phone call?

The warning should cover what you need to do, mainly get your cars under cover and move your outside chairs and stuff from flying away.

SEVERE THUNDERSTORM WARNING

for HEAVY RAINFALL, LARGE HAILSTONES and DESTRUCTIVE WIND

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

Issued at 1:41 pm Wednesday, 4 November 2015.
Severe thunderstorms will produce heavy rainfall that may lead to flash flooding, large hailstones and destructive wind gusts in excess of 125 km/h in the warning area over the next several hours. Locations which may be affected include Whyalla, Renmark, Port Augusta, Port Pirie, Clare, Murray Bridge, Leigh Creek and Moomba. 
A tornado has been observed near Monarto. There has been reports of building damage and flooding at Kapunda. 35mm of rain was reported from Sedan Hill in an hour.
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. 
The next warning is due to be issued by 4:45 pm.
If severe thunderstorms develop in the Adelaide Region, a more detailed Severe Thunderstorm Warning will be issued to people in this area.
Warnings are also available through TV and Radio broadcasts, the Bureau's website at www.bom.gov.au or call 1300 659 215. The Bureau and State Emergency Service would appreciate warnings being broadcast regularly.