Light magnitude 3.1 earthquake at 3 km depth
18 Jun 04:10 UTC: First to report: VolcanoDiscovery after 5 minutes.
18 Jun 04:26: Now using data updates from GeoAu
18 Jun 05:02: Hypocenter depth recalculated from 2.8 to 3.1 km (from 1.7 to 1.9 mi).
Update Sun, 18 Jun 2023, 04:33
Small magnitude 3.1 quake hits 21 miles northwest of Wollongong, Australia early afternoon
3.1 quake 18 Jun 2:05 pm (GMT +10)
An earthquake of magnitude 3.1 occurred early afternoon on Sunday, June 18th, 2023, at 2:05 pm local time near Wollongong, New South Wales, Australia, as reported by Geoscience Australia (GeoAu).
According to preliminary data, the quake was located at a very shallow depth of 1.7 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 3.1 as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Douglas Park (pop. 1,300) located 2 miles from the epicenter, Appin (pop. 2,600) 4 miles away, and Wilton (pop. 3,000) 6 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Picton (pop. 4,700) located 7 miles from the epicenter, and Campbelltown (pop. 13,200) 8 miles away. In Liverpool (pop. 27,500, 20 miles away), Wollongong (pop. 292,200, 21 miles away), Parramatta (pop. 26,900, 28 miles away), and Sydney (pop. 4,627,300, 34 miles away), the quake was probably not felt.
If you were or still are in this area during the quake help others with your feedback and report it here.
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Mag. | Depth | Location | Source |
| 3.1 | 3.1 km | Australia: Appin, NSW | GeoAu |
| 3.1 | 3 km | Near SE Coast of Australia | RaspberryShake |
| 3.1 | 3 km | NEAR S.E. COAST OF AUSTRALIA | EMSC |
Earlier earthquakes in the same area
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