Recent quake near Muswellbrook follows similar events, causing power and water outages but minimal injuries

A magnitude-4.5 earthquake struck the New South Wales Hunter Region near Muswellbrook shortly before 6am on Saturday, continuing a series of seismic events in the area over the past two weeks. Geoscience Australia reported the quake occurred at a depth of 5 kilometres.

The tremor led to power outages affecting around 2,500 customers, but Ausgrid restored power by 11am. Water outages were also reported but have been resolved. The quake was felt strongly in Muswellbrook and as far away as Wollongong, Tamworth, and Gulgong, according to senior seismologist Trevor Allen. Approximately 100 people reported property damage, including minor structural issues like hairline cracks.

Operations at the Mt Arthur Coal mine were temporarily halted for inspection, though no serious injuries were reported. A worker sustained minor injuries but was assessed on-site. Mining activities have resumed with ongoing monitoring of work areas.

In Berkley Vale, more than 150 km from the epicentre, local resident Paula described a frightening experience as her house shook, though not intensely. Beryl from Muswellbrook reported significant shaking and damage to household items.

Seismologist Michael Turnbull predicts that aftershocks, including earthquakes of at least magnitude 3, may continue in the Upper Hunter region for several months. The latest quake follows a magnitude-4.7 tremor on August 23 and another 4.5-magnitude quake on August 24.

Dr. Allen described the current activity as a “swarm of earthquakes” with no clear main shock but a series of moderate-sized quakes, each with its own aftershock sequence. This type of seismic activity makes it challenging to predict the duration and magnitude of future quakes.

NSW Police have been informed of the earthquake, but there are no reports of injuries or damage to infrastructure from the Hunter Valley Police District.

Analysis:

Political: The recurring earthquakes may prompt local and state governments to review and potentially strengthen disaster preparedness and infrastructure resilience. The ongoing seismic activity could influence political discussions around emergency management and building codes.

Social: The frequent quakes have heightened community concern and stress, with residents experiencing disruptions and minor property damage. Public safety measures and community support will be essential in addressing the impacts on affected populations.

Racial: The earthquake’s impact is likely felt across diverse communities in the Hunter Region. Ensuring equitable access to disaster relief and support services for all racial and ethnic groups is crucial in mitigating the quake’s effects.

Gender: The earthquake’s effects on individuals and households, including reported damage and injuries, have no specific gender implications but highlight the need for inclusive emergency response strategies that address the needs of all genders.

Economic: The temporary halt in mining operations and infrastructure damage may have economic repercussions, including costs associated with repairs and downtime. The economic impact on local businesses and industries, particularly mining, will be an important consideration for recovery efforts.