Geoscience Australia has recorded five earthquakes across South Australia in the last seven days - the latest to be felt at Burra on Thursday afternoon, May 14.
Burra was the epicentre of a 4.2 magnitude earthquake at 3.23pm, and Geoscience Australia data shows it was 3km deep.
It was the largest of the five in the last week and Geoscience Australia has received more than 500 felt reports.
At 7.18pm on Wednesday, May 13, a 2.4 magnitude earthquake was recorded north-east of Laura, with 36 felt reports.
On Monday, May 11, a 3.2 magnitude earthquake was detected offshore south-west of Robe at 7.57am, then a second earthquake of 2.2 magnitude occurred at 2.38pm south-west of Innamincka.
Four felt reports were received after a 2.6 magnitude earthquake at Spalding at 10.53pm on Sunday, May 10.