Storm-tide red-alert days 2016

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).

The dates below are averaged across New Zealand – please check tide forecasts for specific locations.

Our tide forecasts page provides tide information at specific locations in New Zealand

Visit NIWA's tide forecasts

2015 forecasts 

View red-alert days for 2015

Red alert and carefree tide dates 2016

The following table shows the dates of the highest high tides ("red alert" dates) and the lowest high tides ("carefree" dates). 

2016

2016

Red-alert Dates (highest high tides)  

Carefree Dates (lowest high tides)

[actual lunar perigee date]

[actual lunar apogee date]

 

3–6 January  [3 Jan]

13–15 January  [15 Jan]

1–4 February  [30 Jan]

9–15 February  [11 Feb]

1–4 March  [27 Feb]

9–15 March [10 Mar]

31 March–1 April  [26 Mar]

6–12 April [8 Apr]

 

5–10 May  [6 May]

 

4–8 June  [3 Jun]

 

3–6 July  [1 Jul]

11–13 August  [10 Aug]

19–22 August  [22 Aug]

9–12 September  [7 Sept]

17–22 September  [19 Sep]

7–11 October  [4 Oct]

16–22 October  [17 Oct]

7–9 November  [1 Nov]

14–20 November  [14 Nov]*

 

13–18 December  [13 Dec]

23 December  [25 Dec]

Red alert calendar view 

The following is a copy of the red-alert tide information in a calendar view. Click the image to view full size. Alternatively you can download the PDF of this calendar below. 

Red_alert_tides_2016_AllNZ.JPG

Red alert tide dates for all New Zealand.

Regional red alert days

Red alert tide days are available for different regions throughout New Zealand. 

Download the 2016 red alert calendar for west Auckland [211 KB PDF]

Download the 2016 red alert calendar for east Auckland [211 KB PDF]

Download the 2016 red alert calendar for Nelson-Tasman [209 KB PDF]

Download the 2016 red alert calendar for Christchurch [209 KB PDF]

Download the 2016 red alert calendar for Dunedin [209 KB PDF]

 

Further information 

High perigean-spring tides, colloquially known as "king tides", peak 1–2 days after New or Full Moon when Moon is in its perigee (i.e., when it is closest to the Earth during its 27½ day elliptical circuit around the Earth), but dates of highest tides vary around New Zealand.

In 2016, the Moon's closest perigee occurs on 14 November* and coincides exactly with a Full Moon, with next closest on 7 April. The year's highest high tides will occur in February to May and September to December.

For the year 2016, "red alert" dates cluster around very high tides (perigean-spring tides) that peak 1–2 days after New or Full Moon when Moon is in its perigee and "carefree" dates cluster around lower high tides after First or Third Quarter when Moon is close to its apogee. 

Times for perigee, apogee and New and Full Moon in UTC (add 12 hours for NZST). 

Related links

Tide forecasts

 

karitane.jpg

Incoming tide at Huriawa Peninsula in Otago. [NIWA]