• Patrick McBride

Storm-tide red alerts dates released

NIWA has released the highest high tide "red alert" dates for the West Coast for 2021.

Storm-tide red alerts are the highest high tide (also known as king tides) dates 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).

The table shows the 2021 dates of the highest high tide "red alert" dates, and the lowest high tide "carefree" dates. It also includes dates when the moon's orbit brings it closest to [perigee] and furthest from [apogee] the earth.

Link to dates (HERE)