A 4.7-magnitude earthquake rocked the Mid North and Flinders Ranges regions in South Australia, the biggest in the regions in 20 years, about 150-kilometres east of Port Augusta on Tuesday evening.
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The earthquake was recorded 27-kilometres south of Yunta at 7.24pm.
Geoscience Australia seismologist David Jepson said it was a significant earthquake but because of its remoteness he didn't expect much damage.
Damage could have been caused up to 10-kilometres away.
Mr Jepson said it was the biggest earthquake in the Flinders Ranges in the past 20 years.
"We haven't had a significant earthquake of this size for sometime," he told Fairfax Media.
“If it was closer to a town it would have been more intense."
Mr Jepson said usually an earthquake of this size can be felt up to 100-kilometres away but Geoscience Australia were getting reports from as far west as Port Pirie and as far south as Gawler.
If it was closer to a town it would have been more intense.
- Geoscience Australia seismologist David Jepson
Peterborough resident Cherry-Ann Lindsay said the earthquake was felt at her place, which is about 70-kilometres south west of the epicentre.
"About 7:20 we were sitting in the lounge room and our recliner chairs started rattling and moving across the floor," she said.
Ms Lindsay said she initially thought it was a truck.
"We live in the main street so I initially thought it was a truck or train but then when we realised there wasn't anything out there we knew what it was."
Ms Lindsay said she didn't think there was any damage at her place but it was hard to tell because of bad light.