Finally get time to get on to the internet.
I guess that'll teach me to talk too soon...
There has been a long band of heavy rain lined up on Porirua/Tawa, and there is flooding throughout town. The worst unfortunately coincided with high tide, so that didn't do wonders for the stormwater drainage. Homes have been evacuated in various areas (mostly Tawa). Titahi Bay was cut off for a couple of hours. The Porirua Stream exceeded its 5yr flood level (but thankfully is now receding), and it all looks set to continue until 6am, with the next high tide around 8am.
EDIT: And here's some footage provided by one of our locals - thanks!