At 12:49:53 on the 18th of June 2020, an earthquake of magnitude 7.4 struck in the Kermadec Islands region of the South Pacific (see map below). The earthquake occurred at a depth of 8 km, locating approximately 650 km northeast of New Zealand’s North Island. This region of the Tonga-Kermadec subduction zone experiences high levels of seismic activity, with nearly 20 events of M 6.5+ over the past half century within 250 km the 18th of June earthquake.
The earthquake was recorded at seismic stations worldwide, including stations of the Irish National Seismic Network (INSN), see seismic waveforms below (select figure to enlarge).
Further information is available from the following sources: