Strong winds and flooding spread across New Zealand last week, with a state of emergency declared in Christchurch, after the country was battered by a destructive area of low pressure. A red warning, the highest warning level, was issued by the MetService (the national meteorological service).
The area of low pressure quickly deepened in the Tasman Sea off the west coast of New Zealand and travelled eastwards, with the centre of low pressure moving across the northern island and creating very strong winds, particularly through the Cook Strait, the body of water that separates the two islands. The wind direction was a south-easterly to southerly, which caused the winds to strengthen as they were funnelled between the islands.
