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Major magnitude 6.5 earthquake - South Pacific Ocean on Sunday, Dec 12, 2021 at 6:58 pm (GMT +10) -

Major magnitude 6.5 earthquake - South Pacific Ocean on Sunday, Dec 12, 2021 at 6:58 pm (GMT +10) Major magnitude 6.5 earthquake - South Pacific Ocean on Sunday, Dec 12, 2021 at 6:58 pm (GMT +10)

Major magnitude 6.5 earthquake at 10 km depth

12 Dec 09:11 UTC: First to report: EMSC after 13 minutes.
12 Dec 09:18: Now using data updates from USGS

Earthquake details

Date & timeDec 12, 2021 08:58:08 UTC -
Local time at epicenterSunday, Dec 12, 2021 at 6:58 pm (GMT +10)
StatusConfirmed
Magnitude6.5
Depth10.0 km
Epicenter latitude / longitude60.6915°S / 154.1065°E
Antipode60.692°N / 25.894°W
Shaking intensityVery strong shaking near epicenter
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearby towns and cities
Weather at epicenter at time of quakeFew Clouds -0.1°C (32 F), humidity: 84%, wind: 16 m/s (31 kts) from W
Estimated seismic energy released3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) | about seismic energy
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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.DepthLocationSource
6.510 km5.5 WEST OF MACQUARIE ISLANDUSGS
5.110 kmNear DunedinRENASS
6.560 kmWEST OF MACQUARIE ISLANDEMSC
6.012 kmWest of Macquarie Island [Sea]INGV
6.610 kmBalleny Islands RegionGeoAu
6.510 kmWest of Macquarie IslandRaspberryShake
6.510 kmWest of Macquarie IslandGFZ

Seismograms

Seismic station: Macquarie Island (MCQ/AU network) | Distance from quake: 746 km / 464 mi | Show on map | Station Info
Seismic station Macquarie Island: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Essendon / Very weak shaking (MMI II) / rattling, vibrating / very short : Large thump at 10.30 then Huge rumble at 10.50pm and 11.08pm | 12 users found this interesting.  
Hobart / not felt (reported through our app)
Melbourne / not felt (reported through our app)

Aftershocks

[More info]

Recorded aftershocks, latest first (3 quakes)

Date and timeMag
Depth
LocationDetails
Apr 20, 2022 19:13
33 weeks ago
5.8

10 km
South Pacific OceanMore
Dec 12, 2021 09:45
52 weeks ago
5.3

10 km
South Pacific OceanMore
Dec 12, 2021 09:05
52 weeks ago
4.5

10 km
South Pacific OceanMore

Earlier earthquakes in the same area

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