On Monday 28th November 2011, a south to southwest change swept its way northwards across Otago and Canterbury during the afternoon.   Temperatures soared to 28°C preceding this change then rapidly plummeted to around 16°C.  This was a good example of what is known in Australasia as a ‘buster'.

Storm tide is the storm surge + the tide. King Tides occur soon after moon reaches its perigee within a day of a full or new moon phase.

Addendum added on  20 Dec 2010 with images from Malcolm Potts 

These clouds show waves rolling along and breaking in the sky, similar to the way that waves behave on the sea.

Wet and windy conditions battered parts of New Zealand around Friday 13 August

When there is an ash cloud, you have to take extra precautions

February 2010.

October 2009

The snow that closed the Desert Road and Napier-Taupo Road from Sun 4th to Tue 6th  October 2009 was unseasonable.  It was caused by a low pressure system deepening over the area at the same time as a cold southerly flow arrived, resulting in moist air being cooled from below in a cauldron of lowering pressure.  This produced an unusually heavy amount of snow over a wide area. The weather map for noon on Sunday shows the low pressure system forming over the Central North Island

A summary of the equinox

On 21 August in 1861, Dr. Charles Knight was appointed the first Director of Meteorological Stations in New Zealand.

His appointment marked the founding of the New Zealand Meteorological Service – this country’s oldest continuous scientific institution. Early missionaries and settlers quickly realised our coasts were subject to rapid changes of weather, with frequent violent storms. In the 1840s and 1850s weather studies were made by military officers, but in 1859 the government put weather stations on a more formal footing.