What area are you in and are you taking any precautions before it hits?
I'm in the Manawatu.
So far, I've been around the house and packed away any loose objects, cleared leaves and grass off a few sump grilles and cleared rubbish off the council storm water drain outside on the road from us.
Perhaps some Geekzoners from Auckland/Northland can let us know when it hits and how bad it is? Cheers.