On Friday 23 August, a magnitude 4.8 earthquake near Muswellbrook, New South Wales, shook the state. The earthquake caused local damage and Geoscience Australia received more than 3,600 felt reports, including from Sydney and Canberra, up to 360 kilometers away. On Friday 23 August, a magnitude 4.8 earthquake near Muswellbrook, New South Wales, shook the state. The earthquake caused local damage and Geoscience Australia received more than 3,600 felt reports, including from Sydney and Canberra, up to 360 kilometers away. Earth Sciences Environment Phys.org – latest science and technology news stories