The South Island is bracing for a powerful winter storm, with MetService predicting heavy rain in western areas and significant snowfall in inland Otago and South Canterbury. The storm is expected to persist through Thursday, bringing challenging conditions across the region.
For drivers, some of the biggest concerns are the Mackenzie Basin and South Canterbury, where more than 30cm of snow could affect State Highways 8 and 80, while up to 20cm could fall on higher sections of SH73 between Christchurch and the West Coast. NZTA says accumulations at those levels could result in closures or restrictions.
Driving in Heavy Rain and Snow
Turn your headlights on to help you see through the rain and make your vehicle more visible through the spray. The speed limit is a maximum, not a target that has to be maintained regardless of conditions.
Preparing for Winter Driving
Before setting out, check the latest MetService warnings and NZTA road information, particularly if you’re heading towards the West Coast, Canterbury High Country, Mackenzie Basin or Otago. Check your vehicle’s tyres, wipers, lights, fuel or battery, and emergency supplies.
The storm is expected to bring strong winds, particularly on exposed roads and around mountain passes, so be careful if you’re driving a van, ute, or any high-sided vehicle. Sudden crosswinds can push a vehicle sideways, so keep both hands on the steering wheel and reduce your speed.
With snow expected to fall down to around 400 metres in parts of inland Otago and South Canterbury, conditions can change rapidly as you climb. A road that is wet and manageable at a lower altitude can become covered in snow or ice just a few kilometres later.
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If snow begins falling while you’re driving, reduce your speed smoothly and avoid abrupt steering, acceleration or braking. Leave much more room than usual between you and the vehicle ahead, and remember that your tyres still need grip to stop and change direction.
Four-wheel drive and all-wheel drive can help a vehicle accelerate on a slippery surface, but they do not give it more grip when braking or cornering. A heavy SUV with four driven wheels can still slide on ice, so do not overestimate your car’s ability to cope with it simply because it has 4WD.
The current forecast includes snow on State Highways 8 and 80, with more than 30cm possible on SH8 and SH80.
Reduced Visibility and Safety Precautions
Reduced visibility can occur due to snowfall, hail, or low cloud. This can make it difficult to judge what’s happening ahead. Drivers should slow down if they can’t see far enough ahead.
Preparing Your Vehicle
Tyres should have proper pressure, tread, and condition, while wipers should clear the windscreen properly.