top of page

Tsunami strikes Great Barrier Island after M7.7 Pacific quake.

The seismic waves from the M7.7 Loyalty Islands earthquake at 2.20am this morning reached the upper North Island within 3 minutes and lasted for nearly an hour. The tsunami waves started arriving 2 and 20 minutes later. Taking a closer look at the Great Barrier Island tide gauge located in Korotiti Bay shows the sea level dropping to 0.00m at 5:38am and then surging to 1.24m at 5:41am. Technically this means the tsunami wave height was just over 60cm. This would have been quite noticeable on the shore line at the time. Fortunately high tide was still 2 hours away at the time of the highest surge.

48 views0 comments

Recent Posts

See All


bottom of page