Magnitude 4.5 Earthquake Near Boorowa Shakes Canberra and NSW: Trend Summary

TL;DR

• A 4.5 magnitude earthquake occurred near Boorowa, NSW, at 12:45 PM.
• The quake was felt throughout Canberra, the Riverina, and Greater Sydney.
• Geoscience Australia confirmed the epicenter was approximately 10 kilometers deep.
• No significant damage or casualties have been reported following the tremors.

What Happened

The earthquake originated near Boorowa, a town located approximately 115 kilometers north of Canberra. According to Geoscience Australia, the magnitude 4.5 tremor occurred at a shallow depth of 10 kilometers, which often results in more noticeable shaking at the surface. Residents across the region reported the ground shaking for several seconds, with many describing the sensation as a heavy vehicle or train passing close by. Over 2,000 felt reports were submitted to the official government earthquake monitoring website within the first hour of the event.

It was like a train rumbling past the house. Everything in the kitchen started rattling, and the floor felt like it was shifting beneath us for a good five seconds.

Key Developments

Emergency services, including the NSW State Emergency Service (SES) and ACT ESA, monitored the situation closely following the initial shock. Data from Geoscience Australia indicates the epicenter was positioned at 34.4°S, 148.7°E. In Canberra, office workers in the CBD reported swaying in high-rise buildings, while residents in suburbs like Belconnen and Gungahlin felt sharp jolts. The tremor was also detected in Orange, Bathurst, Wagga Wagga, and as far east as Sydney's western suburbs. You can check for updates or report if you felt the tremor on the Geoscience Australia official earthquake portal.

Why This Matters

While Australia is not located on a major tectonic plate boundary, intraplate earthquakes of this magnitude are significant for regional infrastructure assessments. A 4.5 magnitude quake is strong enough to cause minor cracks in masonry and shift unsecured objects. This event serves as a reminder of the seismic activity present in the Lachlan Fold Belt, a geological zone known for occasional moderate tremors. The widespread nature of the felt reports highlights how shallow quakes in regional NSW can impact major population centers like the ACT.

What Happens Next

Seismologists are currently monitoring the area for potential aftershocks, which are common following a magnitude 4.5 event. Residents are advised to check their properties for any minor damage, particularly to chimneys or older brick structures. Emergency services remain on standby, though no mass evacuation orders have been issued. The Bureau of Meteorology has confirmed there is no tsunami threat associated with this inland earthquake.

Key Terms & Concepts

Magnitude

A measure of the energy released at the source of the earthquake, typically recorded on the Richter scale or Moment Magnitude scale.

Epicenter

The point on the Earth's surface directly above the underground point (focus) where the earthquake originates.

Intraplate Earthquake

An earthquake that occurs within the interior of a tectonic plate, rather than at a plate boundary.

Frequently Asked Questions

What was the magnitude of the Canberra earthquake today?

The earthquake that struck near Boorowa on March 11, 2026, measured 4.5 magnitude according to Geoscience Australia. It occurred at a depth of 10 kilometers.

Where was the epicenter of the earthquake in NSW?

The epicenter was located near the town of Boorowa, approximately 115 kilometers north of Canberra. Shaking was felt across the Southern Highlands and Central West regions.

Was there any damage reported in Canberra or Boorowa?

As of Wednesday afternoon, there have been no reports of major structural damage or injuries. Most reports involve rattling windows, swaying buildings, and items falling off shelves.

Is there a risk of aftershocks following the 4.5 quake?

Yes, seismologists indicate that aftershocks are possible in the hours and days following a 4.5 magnitude event. These are typically smaller than the initial earthquake.

Could the earthquake be felt in Sydney?

Yes, residents in Western Sydney and parts of the CBD reported feeling light tremors. The shallow 10km depth allowed the seismic waves to travel significant distances across NSW.