Being home now, I can give a better discription of the day. The NZ Maritime Radio
were giving warnings of the expected Tsunami. I will say at this point, I am not sure I agree with how it was given, nor how information was distributed to the broader Boating
radio cominucation system. Firstly, the call from Maritime radio was that a Tsunami was
going to hit NZ between 1400hrs and 1700hrs NZ time and the height of the wave was
1m(3ft) peak to trough and that the wave was
traveling in a North to South direction.
So several points were implied in this. We thought the wave was a certain. We thought the wave was of a known height. We weren't sure if the time was a guess or if the top of the North Ilsand would be hit at 1400hrs and the bottom at 1700hrs. The later is what I had figured so I aproximated the wave would be traveling about 800Kms/hr. That would place it at our location around 1530hrs. Our local marine
radio new nothing. The radio operator had been listening to the warnings but had not heard anything from anyone formaly. She eventually called someone and got the information. I was spot on with my assumption of time. The wave was expected to arrive at the sounds entrances at 3.30PM. The time she was telling us this was now around 3.45PM. That was a bit late. The expected result of the wave surge was extreme tidal activity around the tory channel entrance and other tidal overflows around the sounds entrances. So it turned out to be nothing of any consiquence. We never felt or saw anything. There was a report that a surge of 1m was had in the Mana Marina at around 11.00PM that night. That was way out of any time frames anyone was suggesting, so that was strange. Kind of annoying really. Not that we didn't get a wave, but more for the lack of comunication and accuracy of information. We are in an increasingly narrowing sound and it shallows. It is just perfect for amplifying the effects of a Tsunami should one ever get down the mouth of the sound. I happend to be visiting the sound and was leaving my boat on a block while we went into the port on the other boat. Several things worried us all. Just what could we possibly have come down the sound to meet us. Was my boat safe on the block and so on and so on. I do hope the authorities do a debrief on this and look at possible shortfalls and problems within the system. I think we have a long way to go before we get the civil defence service
upto scratch. Having a top working civil defense system is essential for NZ. We are prone to major earthquakes that do huge damage and we are way over due for the "big one" as they say. The possibility of a huge Tsunami is very real. One's in the past have left the evidence of damage 150ft up hill sides around the country. Mind you, I suppose it dosn't matter what the heck someone says on a radio if one of those big boys roll in.