Called for Wednesday and issued for Wednesday. A front crosses Tuesday evening into Wednesday, with a Heavy Snow Watch for Central Otago, the Southern Lakes and the Mackenzie Basin from Wednesday 4pm to Thursday 2am above 600 m, Road Snowfall Warnings on the Lindis Pass (SH8), the Crown Range Road and Milford (SH94), and a Fiordland Heavy Rain Watch Tuesday 6pm to Wednesday 10am. Christchurch goes about 19 to 10 °C, Dunedin about 20 to 12. Australia, checked, carries no active severe warning.
Two unrelated Southern Ocean cold outbreaks that happen to have booked the same Wednesday.