Key Takeaways
- MetService has issued multiple orange warnings and watches for parts of the South Island due to heavy rain and severe northwest gales.
- The Westland ranges, Fiordland, and the headwaters of Canterbury and Otago lakes and rivers are under orange heavy rain warnings, with expected rainfall ranges of 100-200mm.
- Strong wind warnings are in place for Fiordland and the Canterbury High Country, with severe gale-force winds gusting up to 120km/h.
- People in affected areas are advised to take necessary precautions, such as clearing drains and gutters, avoiding low-lying areas, and taking care on the roads.
Introduction to the Weather Warning
MetService has issued multiple orange warnings and watches for parts of the South Island, as a strong, moist northerly flow is expected to bring intense rainfall and damaging winds to the region. The national forecaster has warned that the active front will move across the country, bringing heavy rain and severe northwest gales to large parts of the South Island. The warnings and watches are in place to alert people in the affected areas to take necessary precautions and to be prepared for the potential disruptions caused by the severe weather.
Heavy Rain Warnings
Orange heavy rain warnings are in force for several regions, including the Westland ranges, where between 160 and 200 millimetres of rain is forecast from 9am Monday until 3am Tuesday. The peak rainfall rates of 20mm to 30mm an hour are expected, which may cause streams and rivers to rise rapidly, leading to surface flooding, slips, and difficult driving conditions. In Fiordland, about and north of Doubtful Sound, MetService is warning of 100mm to 150mm of rain between 6am and 4pm Monday, while the headwaters of Canterbury lakes and rivers south of Arthur’s Pass could see up to 180mm near the main divide from 3pm Monday until 3am Tuesday. The headwaters of Otago lakes and rivers are also under an orange warning, with 120mm to 160mm of rain expected during the day.
Strong Wind Warnings
Strong wind warnings are also in place, with Fiordland facing severe gale-force north to northwest winds gusting up to 120km/h from 4am until 2pm Monday. Similar conditions are expected in the Canterbury High Country from 9am Monday, with damaging winds likely until 3am Tuesday. The strong winds may cause damage to trees, powerlines, and unsecured structures, and make driving hazardous, particularly for high-sided vehicles and motorcycles. A yellow strong wind watch also covers Queenstown Lakes, Central Otago, and inland parts of Southland, Clutha, and Dunedin, throughout Monday, where winds may approach severe gale strength in exposed areas.
Precautions and Advice
People in the affected areas are advised to take necessary precautions to ensure their safety and the safety of their properties. This includes clearing drains and gutters, avoiding low-lying areas, and taking care on the roads. The strong winds and heavy rain may cause disruptions to daily activities, and people are advised to be prepared for potential power outages and property damage. It is essential to stay informed about the latest weather forecasts and warnings, and to follow the instructions of local authorities and emergency services.
Conclusion and Future Outlook
The severe weather warning issued by MetService is a reminder of the importance of being prepared for extreme weather events. The South Island is expected to experience heavy rain and strong winds, which may cause disruptions and damage to properties. People in the affected areas are advised to take necessary precautions and to stay informed about the latest weather forecasts and warnings. As the active front moves across the country, it is essential to be aware of the potential risks and to take steps to mitigate them. By staying informed and taking necessary precautions, people can minimize the impact of the severe weather and stay safe.
