M 6.6 earthquake – west of Macquarie Island
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Local time: Dec 12, 2021 · 21:58 (UTC+13)
StrongShallow · 10 kmPAGER green
Reviewed by a seismologist
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- Magnitude
- 6.6moment magnitude (mww)
- Depth
- 10 kmShallow earthquake
- Epicenter
- -60.796, 154.1391,848 km from Invercargill
- Energy released
- 120 kilotons of TNTabout 8 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 0.0max. instrumental (MMI)
- Aftershocks
- 1M2.5+ within 43 km, up to 60 days
- Significance
- 670USGS score, 0–1,000+
The strongest here since 2012
The last earthquake at least as strong within 300 km struck on Oct 9, 2012.
How strong was it?
Strong earthquake. It released 120 kilotons of TNT, 251 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
1 earthquakes of M2.5+ within 43 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900.
- 6.8 Balleny Islands region Mar 23, 1945
- 6.7 Balleny Islands region Jun 21, 1995
- 6.6 west of Macquarie Island Oct 9, 2012
- 6.5 west of Macquarie Island Aug 9, 2008
- 6.5 west of Macquarie Island Jun 1, 2008
- 6.4 west of Macquarie Island Aug 14, 1925
- 6.4 west of Macquarie Island Mar 4, 2000
- 6.4 Balleny Islands region Feb 3, 1995