We recorded two non-earthquakes in the last 24 hours. The first was on our office seismograph, detecting Oasis fans 5.5km away at Marvel Stadium. The second was picked up by our station in eastern Victoria - likely a sonic boom from a meteor. The sound was reported widely in the region.

A magnitude 2.5 earthquake northwest of Armidale NSW was the largest of 35 events last week, followed by a 2.2 off Kangaroo Island SA. There’s also a 2.0 amongst the four earthquakes that occurred within a 15 minute period near Bonnie Doon VIC early this morning.

A light scattering of earthquakes across the states, with the largest last week only magnitude 2.3 near Adaminaby NSW, just south of the Australian Capital Territory.

It’s #earthscienceweek so I thought I’d go into a bit more detail on how educators can use to our Quick Quake tool to demonstrate how @earthquakes.au seismologists quickly calculate the location and magnitude of an earthquake. It works on macOS machines with Apple Silicon too.

Earthquakes for weeks 40 & 41 - only 50 events to report, which is a little less than average. Only one earthquake cracked the M2 barrier: a magnitude 2.1 on the 10th of October at 8:12pm local time at Dalton NSW, just north of Canberra. #earthscienceweek

42 earthquakes were detected in southeast Australia between the 18th and 28th of September 2025. The magnitude 4.4 near Strathgordon in Tasmania was the largest onshore earthquake in the state in over 20 years, when an M4.5 occurred at Cradle Mountain in November 2004.

Preliminary info: a magnitude 4.4 earthquake has occurred near Strathgordon in southwest Tasmania

Here are the 83 earthquakes detected from 1-17 September. NSW decided to host the M3+ events this time: two magnitude 3.7 earthquakes occurred 370km apart but within hours of each other, one near Nyngan, the other near Muswellbrook. An M3.1 then occurred 5 hours later 135km east near Bulahdelah NSW.

Is 200 earthquakes in just over a month normal for southeast Australia? It is, if your seismic network is dense enough and you’re dedicated to detailed data analysis. Staff at the Seismology Research Centre have manually located more than 35000 earthquakes over the last 50 years.

It's been a while, but we're back with our earthquake map! Here are the 213 events we detected from July 21 to August 31. The two largest were on Kangaroo Island in South Australia: a magnitude 3.6, followed by an M3.2 two weeks later. The other magnitude 3.0 was on Melbourne's Mornington Peninsula.

Did anyone in Sunbury feel this little earthquake just before 9pm?

A magnitude 3.0 earthquake occurred at 11:35am today on Kangaroo Island, South Australia. This follows a magnitude 3.6 that occurred on the island about 2 weeks ago.

#earthquake #gympie #queensland #brisbane

Preliminary info: magnitude 5.3 earthquake near Gympie in Queensland at 9:49am

A magnitude 2.9 earthquake occurred just off the east coast of Melbourne‘s Mornington Peninsula at 4:39am, near Flinders.

A magnitude 3.4 earthquake occurred on Kangaroo Island in South Australia at 1:32am today. Report what you felt at earthquakes.ga.gov.au/feltreport

Seismosphere is a cloud-hosted data visualisation and seismic network management tool that we designed to run our observatory, and we’re proud to be able to help other organisations share their data using this user friendly platform.

Waves of Colour! There’s a new version of Waves coming that brings dark mode, amplitude based waveform colours, and 42 options for the spectrogram colour scheme. Waves is a free app anyone can use for waveform analysis and earthquake location and magnitude calculation. www.src.com.au/downloads/wa...

A colleague noticed this Facebook post about a massive rockfall in the Blue Mountains, so I looked at the overnight records to see if it was visible. The closest station was 30km away, and a spike in the spectrogram at 3:05am had me check other nearby stations, which all rumbled for about a minute.

Glad to be able to share a bit of knowledge about earthquake and tsunami monitoring on ABC News Breakfast this morning www.facebook.com/breakfastnew...

My thoughts on the recent M8.8 earthquake sequence and tsunami, with my NZ colleague John Townend @vicuniwgtn.bsky.social @earthquakes.au @monashuniversity.bsky.social theconversation.com/kamchatka-ea...

NSW saw the largest earthquake last week: a magnitude 2.7 north of Lake Wyangala, along with a 2.2 near Cadia. Victoria had a little swarm near Kerang in the state's northwest, and a magnitude 2.5 tremor north of Moe, near the location of the magnitude 5.6 earthquake in June 2012.

Over a 5 day period, two earthquakes of magnitude 2.5 and one of magnitude 2.3 occurred near Cadia NSW. Another of magnitude 2.4 occurred near Tumbarumba in that state, and a magnitude 2.2 near the Qld border northeast of Mungindi rounds out the largest of the events from last week.

A magnitude 7 earthquake in Indonesia is rumbling across our network.

The largest of last week's 47 earthquakes was magnitude 3.2 that occurred north of Dubbo NSW. The state also hosted magnitudes 3.1 and 2.9 earthquakes minutes apart, occurring near the Qld border, south of Goondiwindi.

A little swarm of earthquakes occurred near the small network that we operate in Queensland. Over 30 earthquakes were detected in a 24 hour period last week.

A sparse week for earthquakes outside of SA - only 22 earthquakes detected in total. The largest was a magnitude 2.8 in NSW, located literally "Back O'Bourke". The other yellow dot is a magnitude 2.3 near Woods Point VIC, which still hasn't completely settled down almost 4 years after the big one.

Here’s another technical explainer video where I try to show how only 40% of the frequency of sampled seismic data represents the frequencies of the earth. Researching this helped me understand how alias frequencies masquerade in our data when they don’t actually exist, and why we need good filters.

Here’s the last 2 weeks of earthquakes in southeastern Australia. 103 in total: 9 in the M2 range, 51 in the M1 range, and 43 below M1. You can almost trace our mountain ranges with these plots, funnily enough.

A magnitude 2.7 earthquake occurred near Traralgon VIC at 7:35am this morning. Report it to Geoscience Australia if you felt it.

It’s all happening on our YouTube live stream tonight - a magnitude 2.4 earthquake at Dalton NSW followed a few minutes later by a 2.6 at Mt. Kosciuszko, just as energy waves from a magnitude 5.8 near Taiwan arrive in southeast Australia

The largest earthquake we detected in our region last week was a magnitude 3.0 located east of Georgetown in South Australia. This was one of a dozen earthquakes in the local area that are spread widely, possibly across several faults. The magnitude 2.2 in NSW was in the Mirannie area.

Of the 25 earthquakes detected in our monitoring area (most of this map), the largest was a magnitude 3.6 near Menangle, 55km southwest of Sydney NSW. It was followed a minute later by a magnitude 2.3 aftershock. The largest earthquake on record in this area was a magnitude 4.8 in November 1981.

A magnitude 3.6 earthquake occurred at 2:53pm today near Menangle NSW. At least one aftershock so far. More info to come.

Purple dot has entered the chat. This is the first magnitude 5+ earthquake since the Apollo Bay VIC M5.0 in late 2023. At MLv5.2 this is the largest earthquake in NSW in our catalogue since the 1989 Newcastle ML5.6. There have been at least 9 aftershocks large enough for us to detect, four over M3.

This morning’s magnitude 5.2 earthquake near Nyngan is the largest earthquake to have occurred in NSW for over 30 years, since the M5.3 Ellalong earthquake in 1994 that occurred 5 years after the deadly M5.4 Newcastle earthquake in 1989. Fortunately today’s epicentre was in a remote area.

We don’t operate a station within 500km of the epicentre, but this morning’s magnitude 5 earthquake near Nyngan in central NSW showed up nicely at all of our stations across the southeastern states. It was felt as far away as Sydney.

42: the meaning of life, and the number of earthquakes we detected in southeast Australia last week. Lake Eyre South in South Australia had two of the larger events - magnitudes 2.7 & 2.2. The yellow dot in NSW was also magnitude 2.2, located near Boorowa.

Several earthquakes in the low- to mid-magnitude 2 range occurred last week across the southeastern states. At the right time and place, an earthquake this small can felt, as demonstrated near Melbourne and Adelaide.

It’s a windy night in Melbourne, but did anyone feel the magnitude 2.4 at Mt Dandenong just now?

A magnitude 3.0 earthquake occurred between Baroota and Melrose in South Australia occurred on Sunday morning, the largest in our region last week. Notably, 8 of the 31 earthquakes detected were above magnitude 2.0, with one being an aftershock of the M4.9 near Singleton NSW ten days earlier.

Can we see very low frequency signals from low cost high frequency geophones without a feedback circuit? Apparently so, but high quality digitisers and a lot of amplification is required. A prosumer seismograph may be in our future!

We have revised our magnitude for last Wednesday morning's earthquake near Singleton NSW to MLv4.9. There have been no aftershocks large enough to detect in the 5 days following that event. 91 other earthquakes occurred in the last fortnight, the largest a magnitude 2.7 near Boorowa NSW.

This earthquake is the largest event in the region since last year’s Muswellbrook quakes, which were also located at a mine site. The Warkworth/Mt Thorley area has had 6 earthquakes above M2 in the past year, the largest a magnitude 3.2 about 2 weeks ago.

If you think you’ve felt an earthquake, don’t forget to check our YouTube live stream. If it’s big enough to be felt, it’ll be super-obvious on multiple stations. Here’s what it looked like shortly after this morning’s M4.7 Singleton earthquake, clearly visible on all stations in NSW, VIC, TAS & SA

A magnitude 4.7 earthquake occurred at 2:55am near Singleton NSW. Please report your experience at earthquakes.ga.gov.au

If you missed out on our MegaQuake t-shirt giveaway at SSA last week, go to src.com.au to purchase one using the discount coupon below. Skip the Google/Apple Pay shortcut and apply the code ssa#rocks in the cart for 20% off the t-shirt price. We’ve recently added some larger sizes to our stock.

That’s a wrap for 2025 at the @seismosocam.bsky.social annual meeting. As always I am grateful for the opportunity to meet my online friends in person, and to showcase our observatory and the tools that we developed to monitor earthquakes. See you all next year in Pasadena!

Technical sessions have started at #SSA2025 and we’re set up in the exhibition hall for the breaks. Come and talk to me about Seismosphere and grab a t-shirt!

We detected 50 earthquakes in the region last week, the largest being a magnitude 3.2 event located at a mine near Singleton, NSW. Victoria, Tasmania and South Australia all had multiple events between magnitude 2.0 and 2.6.