2021 Kermadec Islands earthquakes

The 2021 Kermadec Islands earthquakes were a series of earthquakes with magnitudes of 8.1 and 7.4 that occurred at 19:28:31 UTC on 4 March 2021. The epicentres were located southeast of Raoul Island in the Kermadec Islands, part of the New Zealand outlying islands. The main magnitude 8.1 earthquake was preceded by a magnitude 7.4 foreshock and followed by a magnitude 6.1 aftershock. A separate, unrelated magnitude 7.3 earthquake occurred off the coast of the North Island of New Zealand, approximately 900 km to the south, several hours before the main quakes. More than a dozen aftershocks exceeded magnitude 6.

2021 Kermadec Islands earthquakes
UTC time2021-03-04 17:41:25
 2021-03-04 19:28:31
ISC event619918421
 620360228
USGS-ANSSComCat
 ComCat
Local dateMarch 5, 2021 (2021-03-05)
Local time06:41:25 NZDT
 08:28:31 NZDT
Magnitude7.4 Mw
 8.1 Mw
Depth43.0 km (27 mi)
 28.9 km (18 mi)
Epicentre29.735°S 177.282°W / -29.735; -177.282
FaultKermadec-Tonga subduction zone
TypeMegathrust
Areas affectedNew Zealand; Pacific islands
Total damageLimited
Max. intensityMMI VIII (Severe)
Peak acceleration0.75 g
TsunamiUp to 2.4 m (7.9 ft) in Raoul Island.
CasualtiesSeveral injured
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