"This continues to be a significant weather event," MetService said in a statement this morning.
"Strong winds could make driving hazardous, especially for high-sided vehicles and motorcycles. Snow is also expected to affect many higher roads and passes across the South Island, causing disruption to travel.
"Also, the combination of snow and strong cold southwest winds is likely to cause stress to livestock.
"People are urged to take extra precautions, especially those travelling, and to stay up to date with the latest forecasts and warnings for their area as the event unfolds."
They are also heavy rain warnings in place for Taumarunui. Tongariro National Park, Canterbury headwaters about and south of Arthurs Pass up to 1pm.
Plus strong gusts are expected in Wellington and Wairarapa excluding the Tararua District
over the next 5 to 6 hours, and gusts may still reach 120km/h.