People across the lower South Island have reported feeling an earthquake this morning.
GeoNet's early reports say it was a 'moderate' 5.9 magnitude shake, located 35 km west of Milford Sound and at a depth of 5km.
Over 3500 people have reported feeling it, on GeoNet's Felt It tool.
People in Dunedin, Invercargill, Wanaka and Queenstown say they have felt it.
Emergency Management Southland says there have been no reports of damage.