Christmas Day 2007 Tangaroa gently made his presence felt along South Beach.
High water was about 5pm with a height of 2.4 metres and only gulls were around to witness the sea creep up to the Timaru Creek outfall pipe. The barometer was low, around 996 looking at the isobaric chart for 6pm.

It’s a warning of things to come, because there was a flat calm, and very little lift in the sea.


An article on NIWA’s site is quite conservative about rises in sea level due to global warming, pointing out that they are masked by the Interdecadal Pacific Oscillation and by El Nino events. By contrast, an article in National Geographic dated 2004 predicted catastrophic rises in sea level in the event that Greenland’s Ice Shelf melts. Since then most of us have become familiar with video from Greenland showing the Ice Shelf melting. On National Radio Christmas Eve Grant Redvers, an environmental scientist aboard the research vessel Tara navigating near to the North Pole, pointed out that the melting of ice removes large areas of reflective surface further accelerating global warming. In a later post I will look more closely at the exact line taken by the 50-year and 100-year hazard lines.