Tide Resources

Science Centres: Coasts, Natural Hazards

NIWA has a range of online tools and information relating to tides, including a tide forecaster, yearly tide envelopes and storm tide "red alert" days.

Beach Profile Analysis Toolbox

NIWA’s Beach Profile Analysis Toolbox (BPAT) has been developed to provide an easy to use, integrated package for the input, quality checking, analysis and archiving of beach datasets

Storm-Tide Red-Alert Days 2012

Storm-tide "red-alert" dates are "king-tide" days that Emergency Managers and Coastal Hazard Managers should write in their diaries and keep an eye on adverse weather (low barometric pressure, onshore winds), river levels and sea conditions (waves and swell).

Storm-Tide Red-Alert Days - previous years

Storm-Tide Red-Alert Days in previous years.

Tide Envelopes 2012

The range for high and low tides throughout the year.

Tide Envelopes - previous years

The range for high and low tides throughout previous years.