Significant earthquakes of 2021

September 21, 2021 Earthquake: Melbourne, Australia

September 21, 2021 · M5.9

A magnitude 5.9 earthquake struck Melbourne, Australia on September 21, 2021 at 23:15:53 UTC, 10 km below the surface.

Map

Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.

The earthquake

Date
September 21, 2021
Time
23:15:53 UTC
Place
Melbourne, Australia
Magnitude
5.9 (Mw)
Focal depth
10 km (6 mi)
Intensity
5 on the Modified Mercalli scale
Tsunami
None recorded
Epicenter
37.491° S, 146.363° E
Country
Australia

The toll

Damage
Moderate (about $1 to $5 million)
Houses damaged
46

Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.

What the record says

NCEI’s account, from the sources it cites.

The southeast coast of Australia has been rocked by a large earthquake, shaking buildings in Melbourne, Sydney and Adelaide. Eyewitness accounts are flooding in of residents fleeing apartment blocks in Melbourne after feeling strong tremors for up to 30 seconds. Social media has been inundated with images from inner-city suburbs which show rubble strewn across streets believed to be due to quake damage. Early reports suggest at least 46 buildings have been damaged across Victoria in the earthquake. (reference #13055)

A magnitude-5.9 earthquake struck in southeastern Australia on September 22, 2021, at 9:15 am local time. This is the largest earthquake in Victoria in the two centuries of European settlement. Aboriginal Australians have lived in eastern Victoria for around 40,000 years [...] Initial insurance claim data indicates that at least 1,500 buildings suffered minor damage such as fallen masonry (e.g. chimneys) and cracks to plaster, render and walls. (reference #13061)

Other significant earthquakes nearby

Within 200 km, the deadliest first.

More

Significant earthquakes of 2021The 2000sEvery quake the USGS located in 2021Recent earthquakes near hereThis day in weather history

Sources

Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 10576.