Update 2025-03-25: According to reports on Tuesday (25 March), the authorities are urging people to avoid beaches at the foot of the South Island. Strong currents and waves could lead to injuries and there is a risk of drowning.
2025-03-25, New Zealand: Strong magnitude 6.7 M coastal earthquake
Earthquakes of this magnitude cause damage (sometimes severe), to buildings and infrastructure. Transport and infrastructure disruptions are to be expected.
It is unlikely that a destructive tsunami was generated by a coastal earthquake of this magnitude. Smaller, local tsunamis can occur in coastal areas.