As more of the intense weather that has pounded the North Island moves south, people are being reminded to take extra care on the roads and to stay abreast of any warnings and traffic restrictions.

Areas such as Kaikōura and Banks Peninsula have already seen heavy rain, and MetService is warning that the large low-pressure system that has been over the North Island is still packing a punch as it heads down the South Island this afternoon.

In addition to the usual advice about taking care while driving on wet roads, people should be aware of a raised risk of treefall, slips and surface floodings from sustained rainfall.

New Zealand Transport Agency Waka Kotahi (NZTA) and local councils are also monitoring lake levels that could impact State Highway 75/Christchurch-Akaroa Road, as heavy rain is forecast on Banks Peninsula through until 6pm tomorrow.

Those travelling on State Highway 1 between Picton and Christchurch should also be aware of the flood risk from rivers and streams, along with the potential impacts of large coastal swells through until tomorrow morning.

15 February - Forecast heavy rain raises risk of flooding, slips on roads

With multiple instances of flooding in and around Kaikōura in recent weeks, road users are being advised to prepare for the possibility of more disruption as further heavy rain is forecast.

MetService has issued an orange heavy rain warning from 8pm tonight through until 9pm tomorrow for the Kaikōura District and Canterbury north of Amberley. This level of warning indicates the potential for surface flooding, slips and difficult driving conditions.

A heavy rain watch is in place for Banks Peninsula from 6pm tonight, in addition to wind warnings or watches for Marlborough.

If travelling on roads in these regions, such State Highway 1 between Christchurch and Picton, people are encouraged to keep an eye on the weather conditions and forecasts, and to plan for any traffic disruptions at our Journey Planner site.

People should always avoid trying to drive through floodwaters, especially where the depth is uncertain. Heavy rain means slippery roads and reduced visibility, and drivers need to think about adjusting their speed and travelling distances, avoiding sudden braking, and staying visible (having headlights on).