Seismology Research Centre

A magnitude 4.5 earthquake has struck off the South Australian coast this morning. Although too small to cause a tsunami from sea floor rupture, earthquakes of this magnitude in other parts of the world have triggered underwater landslides that have caused tsunami waves.

Korumburra activity continues, with another 35 taking the total to over 150 aftershocks in 18 days. The largest of these last week had a magnitude of 3.2, which is the same magnitude as an earthquake detected near Rosebery in TAS on Saturday morning. The M2.9 near Greenock in SA was reportedly felt.

Another aftershock in Korumburra a few minutes ago, one of the few above magnitude 3 we’ve seen in the last two weeks since the 4.8. Report if you felt it using the Seismoscope app

The Great ShakeOut Earthquake Drill is today. Get on board. Actually, get under a table. @greatshakeout.bsky.social

83 of last week's 125 earthquakes were aftershocks to the M4.8 Korumburra earthquake, ranging from magnitude 0.3 to 3.5. Several event clusters occurred in NSW: west of Crookwell; north of Douglas Park; and east of Moss Vale. Explore them all in detail with our free Seismoscope app.

A magnitude 3.6 aftershock occurred a few minutes ago, which is the largest Korumburra aftershock in the sequence so far. Report what you felt using the Seismoscope app

Southeast Victoria was very active last week, first with a magnitude 3.7 near Woodside on Thursday, then the roughly 10x larger magnitude 4.8 near Korumburra at 2am Saturday. There's at least 100 aftershocks to the latter quake that are still being processed. Download Seismoscope for more details.

Here’s a sped up playback of the Korumburra earthquake from our YouTube live stream. If you feel something in southeast Australia, check out the YouTube Live. If it’s big enough to be felt, it’ll be super obvious on multiple stations.

A magnitude 4.7 earthquake near Korumburra has woken thousands of people at 2:01am Saturday. Fill in a report at earthquakes.ga.gov.au

A magnitude 3.7 earthquake occurred in southeast Victoria a few minutes ago in the same area where some smaller earthquakes occurred a week ago. View in the Seismoscope app for more info.

Do you want to know exactly when and where these earthquakes from last week happened? Download our free Seismoscope app to zoom in and view recent earthquakes in this area. Don't forget to use the green button in the earthquake info panel to report to ga.gov.au if you felt any of these earthquakes.

Earthquake in Victoria a few minutes ago. Find it and more in our app. Download links at seismoscope.net

Android users - our latest app update includes data from @geonet_nz with links to their reporting form if you feel an earthquake in Aotearoa. Download links at seismoscope.net or search for Seismoscope in the store and look for our logo.

We've decided to update our weekly map image to remind you that you can download Seismoscope so you can zoom in to find out exactly when and where any of these earthquakes occurred. Download links can be found on seismoscope.net or search for it in the app stores and look for our "S" app logo.

Download links at Seismoscope.net

It may seem like just another earthquake browser app, but Seismoscope makes reporting what you felt much easier, and your feedback goes directly to the relevant authority. Seismoscope also includes @earthquakes.au data that you can’t get anywhere else 😊

We're proud to finally announce the availability of our new app, Seismoscope. It's freely available for Apple and Android phones and tablets. It was made to share Australian data, but it also lists earthquakes from all over the world, and allows you to report what you felt to the relevant authority.

Just 30 earthquakes in the region last week. The largest was a magnitude 2.6 near Douglas Park NSW that was reportedly felt in the local area. Typically earthquakes below magnitude 4 in Australia aren't damaging, but depth of event, surface soil conditions, and structure type are factors to consider

A magnitude 2.7 earthquake just occurred near Douglas Park NSW a few minutes ago. Report it to Geoscience Australia if you felt it.

This week it was Victoria's turn for an orange dot: a magnitude 3.5 earthquake north of Casterton on Saturday at 10:29pm, which was felt locally. Our new app is in review and will be available for download on Apple & Android devices soon, enabling you to report earthquakes directly from your phone.

A shallow magnitude 3.5 earthquake occurred on Friday the 28th of August at 1:07pm, located about 12km southwest of Campbelltown in NSW. It was the largest of 36 earthquakes detected last week. You'll soon be able to explore events in more detail with an app for your phone or tablet - stay tuned!

Here's a map of the last week of earthquakes up to midnight Sunday UTC time (10am AEST today). Based on data from 38 stations, we've recalculated this morning's earthquake near Broadford as a magnitude 3.0. Despite the 1:14am origin time, almost 300 people reported feeling it, up to 80km away.

This small magnitude 2.6 earthquake occurred at 1:14am on Monday 24 August. The epicentre was about 10km south of Broadford VIC, and it has been reportedly felt in Melbourne’s northern suburbs.

The SRC are so proud to be involved in this project. Great to see drone footage and other imagery from our very own @seislologist.bsky.social featured throughout this video. For more on our contribution to WA Array, check out our article on src.com.au

The SRC detected 42 earthquakes last week, 7 of which were over magnitude 2. The largest was a magnitude 2.9 northeast of Gladstone, SA. A lot of folks ask us how they can find out more about individual events on our maps. We will soon be releasing an app to allow you to do just that. Stay tuned!

The two largest earthquakes last week were in Victoria: a magnitude 2.3 earthquake occurred near Rushworth at 12:54pm on the 4th of August, at a depth of 11km; and a magnitude 2.6 earthquake occurred the following day at 9:01am, located near Yallourn, at a depth of 18km.

All earthquakes last week were below magnitude 2, which we expect were all too small to be felt, particularly as their average depths were 9km, ranging from near-surface to 20km deep. Three earthquakes occurred near Korumburra VIC, an area that has hosted several magnitude 4+ events in recent years.

The largest earthquake in the region last week was a magnitude 3.0 north of Dubbo, NSW. It struck at 5:31am on 22 July. The magnitude 1.9 near Sydney was in the Kamay Botany Bay National Park, near Cronulla at 2:13pm on 21 July.

Just 28 earthquakes detected last week in our monitoring area. Yes, EARTHQUAKES. No magnitude-shaming here! People refer to small earthquakes as "tremors", a medical term related to involuntary muscle movement. We do too sometimes, but you can't deny they're all earthquakes, no matter how small ☺️

Despite the 3:30am start, I really enjoyed answering questions from callers on the @news.abc.net.au #Overnights program last Friday. Here's a couple of snippets, but you can find the full program at the link below. The hour-long earthquake segment starts at 1:33:14. www.abc.net.au/listen/progr...

32 earthquakes detected in a week is close to the average for our map area. Note that a magnitude 2.1 is hiding under that 1.8 near Muswellbrook NSW. We're often questioned about these earthquakes as they don't appear on GA's online map. GA only publish small events if they are likely to be felt.

Yesterday's MLv4.0 earthquake, SW of Lavers Hill in Victoria's Otway Ranges, occurred at a depth of 20km, which may explain why it wasn't as widely felt as an earthquake of this magnitude would normally be. This earthquake was about 25x larger than the next biggest, a 2.6 in SA's Flinders Ranges.

A magnitude 4 earthquake has occurred off the Cape Otway coast in Victoria about 5 minutes ago. Report it to Geoscience Australia if you felt it.

Another 39 earthquakes added to the catalogue. The largest last week was a magnitude 2.2 off Port Campbell in Victoria, followed only an hour later by an unrelated magnitude 2.1 that occurred just south of Woodford in the Blue Mountains, west of Sydney NSW.

Four M3+ earthquakes in a single week for our monitoring area is unusual, but the time and distance between them means they are unlikely to be related. The largest was a magnitude 3.5 at Cadia NSW. The other 3.0 in NSW was about 50km northeast of Dubbo, with a 3.0 and 3.2 in SA's Flinders Ranges.

Here’s a magnitude 3.3 earthquake from 5:43am this morning near Cadia NSW

Of the 63 earthquakes that occurred in southeast Australia over the last fortnight, eight were over magnitude 2. The largest two were both magnitude 2.8, one on June 6th at 6:26am off the NSW south coast, and the other on the 14th at 12:51pm under Blowering Reservoir in southern NSW.

It doesn't help at all, but we know exactly when this happened to one of our seismograph stations.

We’re catching up on data analysis after some field work, so to tide you over until the next map here’s an interesting little earthquake that occurred deep under @monashuniversity.bsky.social in @cityofmelbourne.bsky.social earlier this week.

The two magnitude 2.1 earthquakes in Tasmania last week were about 42 hours apart and located near Rosebery and Renison Bell. The largest earthquake last week was only slightly larger at M2.3, located off Sandy Point in Victoria.

Detecting 36 earthquakes in a week is pretty close to average for our monitoring region in southeast Australia. Three earthquakes just crept into the magnitude 2 range: one north of Balranald NSW, one east of Burra SA, and another west of Arkaroola SA.

Another magnitude 3.5 earthquake has occurred near Mount Perry in Queensland, at a few minutes past 4am. Comment if you felt it.

Here's the last 2 weeks of earthquake activity covered by our monitoring network in Australia's southeast. The largest earthquake was a magnitude 3.4 near Dumbalk in Victoria, and the eight magnitude 2.0-2.9 spread across the states contributed to a total of 83 earthquakes for the fortnight.

A magnitude 3.5 earthquake occurred near Mt Perry in Queensland at 7:51am this morning. The epicentre was about 90km west of Bundaberg.

There was a little magnitude 1.8 south of Wodonga on the VIC-NSW border at 6:34pm tonight. Something this small is not usually noteworthy, but we had a report that the it was enough to bring entire streets of people out of their homes for what they thought were explosions.

At 6:12pm tonight there was a magnitude 3.4 earthquake near Foster in Gippsland, Victoria. Comment if you felt it.

A magnitude 3.6 earthquake occurred near Hawker in South Australia last week and was the largest of 27 earthquakes detected. Each state hosted at least one magnitude 2 event: a 2.8 near Dumbalk VIC, a 2.8 off Kiama NSW, and a 2.2 near Rosebery TAS. The 2.0 near Adelaide was east of Willunga SA.

Learn Seismology for FREE! I found out about this skill building workshop that is run by @earthscope.org while at the @seismosocam.bsky.social meeting in April. Registrations open today (1 May) so watch the video to find out more from Ellie Meyer and then search up “SSBW Earthscope” to sign up #stem

Another 33 earthquakes were added to the catalogue last week. The little cluster in Tasmania was between Lake Pedder and Lake Gordon. The biggest event for the week was only magnitude 2.4, located about 140km north of Broken Hill in NSW.

The largest earthquake last week was a magnitude 4.6 on the 14th of April, located at Cadia in NSW. It was felt across the state to distances of over 300km. It's the largest earthquake ever recorded in the area, the next largest being a magnitude 4.2 in 2017, coincidentally also on 14 April (AEST)