A major winter weather system is expected to bring heavy rain, snowfall and possible travel disruptions across parts of the South Island from Wednesday.
According to a report by Stuff, MetService says Westland could experience prolonged heavy rain, while inland Otago and South Canterbury may see heavy snow from Wednesday, with conditions spreading further on Thursday.
Meteorologist Devlin Lynden said the low-pressure system was near Adelaide on Monday and was expected to move east from Tuesday, bringing a band of rain towards the South Island.
“The southerly winds pick up Thursday, and the rain pushes in. There is significant snow lowering to 400m on Thursday for central Otago and inland,” as quoted by Stuff.
Lynden said the snowfall could be substantial, describing it as “a significant level of snow” that “looks to be quite big,” as quoted by Stuff.
Despite the storm, temperatures are expected to remain above freezing, with populated areas forecast to stay in the low teens.
"It will be cool but it won’t be freezing cold,” Lynden said, Stuff has quoted.
The NZ Transport Agency is warning motorists to prepare for difficult driving conditions. Its forecasts suggest more than 30cm of snow could fall around State Highways 8 and 80 in the Mackenzie Basin and South Canterbury on Thursday, while up to 20cm could affect State Highway 73 above 700m between Christchurch and the West Coast, as reported by Stuff.
The agency said snowfall at those levels could disrupt travel, with some highway sections potentially closed or subject to restrictions.
“Roading crews will be out around the clock clearing snow or other obstructions and making the highways as safe as possible,” Stuff has quoted.
Drivers have been advised to monitor weather forecasts and road conditions before travelling.
“In winter driving conditions where traction is affected by snow/ice or heavy rain, motorists are urged to reduce their speeds, increase their following distances, avoid sudden braking or turning movements and to stay as visible as possible, as quoted by Stuff.
“Carrying warm clothing, food and water is also recommended in case of travel delays or detours,” NZTA said.