GEOSCIENCE Australia confirmed Muswellbrook experienced a minor earthquake, or two, on Thursday morning.
A 3.4 magnitude quake, at a depth of three metres, was registered at 11.23am.
Another one occurred less than half an hour later.
Many locals felt the vibrations within the CBD, and nearby streets, with walls and windows shuddering and the occasional item falling to the floor.
The shire is no stranger to the occasional tremor.
In June, 2017, residents reported two earthquakes over the same weekend.
And, a further 2.3 magnitude quake hit the area in September that year as well.
“It’s an area with known faults,” Geoscience Australia seismologist Eddie Leask said.
“We know the Hunter Valley is a place [prone to] earthquakes.
“That’s not going to change.”