Civil Defence Northland said that damage at the marina was "serious". According to Hauraki Gulf Weather, the tsunami struck on 16 January at between 01:05 and 01:10 local time on Great Barrier Island with a height of 1.33 metres (4.4 ft).[43] The tsunami caused flooding at Mahinepua Bay where a campsite was located but all 50 individuals at the site were safe.