were you reassured by those murmers from the govt after the boxing day tsunami that we have a warning system?
well, think on. a letter writer to the herald points out that in daylight hours people could be warned via radio and television; but at nighttime?
the letter writer asked the head of north shore civil defence that question, and was told police would go door to door.
about 2 seconds consideration of that brilliant plan shows it as useless.