One of Australia's major wine and coal producing regions has rattled through its third earthquake in just over two weeks, and experts say there could be more to come.
The 4.5-magnitude quake struck roughly 5km underground, 10km southwest of Muswellbrook in the NSW Hunter just before 6am on Saturday, knocking out power to around 2500 premises.
There have been more than 30 earthquakes in the Muswellbrook area, about 175km north of Sydney, since an initial quake on January 23 this year.
