Rain becoming heavy from later this afternoon. In the 18 to 21 hours from 3pm today, around 200mm possible on higher slopes of the Tararuas and 80 to 100mm possible about the northern hills of Wellington. Heaviest falls are likely to be overnight with peak intensities of 25mm per hour possible, especially about the Tararuas.
Please be extra careful on the roads - there have been a number of weather-related accidents around the region lately. And if you have a stormwater grate outside your home, you can help avoid having a huge puddle to navigate if you clear the autumn debris from it.