@larand We get them fairly frequently here, usually around 70 km to the south-east. Depth is typically around 10 km or so, damage minimal although minor roads closer to the epicentre are sometimes affected with landslips. Richter-scale events of 7 & 8 are not uncommon.
Most times there's a sudden abrupt vertical jolt. Several years ago we has a weird one, though. It was a wriggly motion, an old school friend on Twitter likened it to sitting on top of a washing machine on its spin cycle. This went on for at least 35 seconds.
The typical epicentre is home to Megascolides australis, the giant Gippsland earthworm that makes a distinctive gurgling & rumbling noise as it moves deep underground. These critters are normally around a metre long although specimens 3 or 4 times that length have been found.
Local aboriginal legend says the tremors are caused by the giant worms.