Andrew Stephens, Wednesday the 30th of September, 2009 in Happening

It This post was automatically imported from my old sandfly.net.nz blog. It may look a little weird since it was not originally written for this format. is not everyday that I awaken to the radio telling me that Civil Defense has been activated due to the imminent arrival of a Tsunami.

Luckily the effects of the Tsunami on New Zealand were slight to non-existent, but not totally unnoticed. The following chart is from the excellent GeoNet web site. GeoNet (amongst other things) maintains a system of tsunami gauges around the country for just this sort of event.

GeoNet graph of the wave gauges around NZ

The graph on the GeoNet site is a moving window so I have copied a static version here. I took graph snapshot at about 11pm, you can clearly see the waves hit different parts of the country in succession start from about 9:30am at Raoul Island (I didn't know where it was either). Luckily for us there was nothing over a metre.

Samoa was not so fortunate as we were in NZ, with many fatalities in low lying areas despite a very speedy evacuation.