The most significant rainfall in 10-years is predicted to fall in the Canterbury region this weekend with Waka Kotahi NZ Transport Agency advising motorists to be prepared for disruptions on the road network.

“MetService is forecasting around 150mm of rain to fall in Canterbury over Saturday, Sunday and Monday, which has the potential to cause widespread flooding, land instability and for some rivers to break flood banks,” says Waka Kotahi Senior Manager, Maintenance and Operations, Wayne Oldfield.

“People should plan ahead by checking the forecast before heading out, and keeping an eye on our website and social media for updates and road closures,” said Wayne.

The heavy rain event is forecast to strike between 3pm Saturday (29 May) and 11am Monday (31 May) according to the MetService.

“Waka Kotahi will be actively monitoring the situation with maintenance crews out on the network ready to react as the situation unfolds.”

Motorists who need to travel are urged to drive to the conditions, reduce their speeds and keep a safe following distance.

Wanaka is forecast to have occasional rain over the weekend with gusty southeasterlies on Sunday. There are no weather watches or warnings in place for Wanaka.