Key Takeaways
- Multiple orange heavy rain and strong wind warnings and watches have been issued for the South Island, effective Monday
- The Westland Ranges, Fiordland, Canterbury, and Otago are expected to receive significant rainfall, with totals ranging from 150-200mm
- Severe gales are forecast for Fiordland and the Canterbury High Country, with gusts reaching up to 120km/h
- Drivers are advised to exercise caution and avoid low-lying areas due to the risk of surface flooding and slips
- The strong winds and heavy rain may cause damage to trees and powerlines, and create hazardous driving conditions
Introduction to the Weather Forecast
The start of the week is expected to be wet and blustery for parts of the South Island, with multiple orange heavy rain and strong wind warnings and watches issued for Monday. According to MetService, an active front preceded by strong moist northerlies will move across the South Island on Monday, followed by showery westerlies. This weather pattern is expected to bring significant rainfall to several areas, including the Westland Ranges, Fiordland, Canterbury, and Otago.
Heavy Rain Warnings
Orange heavy rain warnings have been issued for several areas, including the Westland Ranges, which could see 160-200mm of rain from morning through early Tuesday. Fiordland may receive up to 150mm of rain during the day, while Canterbury and Otago headwaters are also in line for significant falls, with up to 180mm near the main divide. The heavy rain is expected to cause streams and rivers to rise quickly, leading to surface flooding and slips. As a result, drivers are urged to take care and avoid low-lying areas to minimize the risk of accidents.
Strong Wind Warnings and Watches
In addition to the heavy rain, severe gales are forecast for Fiordland and the Canterbury High Country, with gusts reaching up to 120km/h. A strong wind watch has been issued for Queenstown Lakes, Central Otago, inland Southland, Clutha, and Dunedin, effective from 6am until 4pm Monday. The strong winds may cause damage to trees and powerlines, and create hazardous driving conditions, especially for high-sided vehicles. MetService has warned of the potential risks associated with the strong winds and has advised drivers to exercise caution when traveling.
Full List of Weather Watches and Warnings
A full list of weather watches and warnings has been issued by MetService, including:
- Heavy Rain Warning – Orange: Ranges of the Westland District, headwaters of Canterbury Lakes and Rivers, headwaters of Otago Lakes and Rivers, and Fiordland
- Strong Wind Warning – Orange: Canterbury High Country and Fiordland
- Strong Wind Watch: Queenstown Lakes, Central Otago, inland Southland, Clutha, and Dunedin
The warnings and watches are in effect for various periods, ranging from 9 to 18 hours, and are expected to impact several areas across the South Island.
Conclusion and Precautions
In conclusion, the South Island is expected to experience a wet and blustery start to the week, with multiple orange heavy rain and strong wind warnings and watches issued for Monday. The heavy rain and strong winds may cause surface flooding, slips, and damage to trees and powerlines, and create hazardous driving conditions. Drivers are advised to exercise caution and avoid low-lying areas to minimize the risk of accidents. It is essential to stay informed about the latest weather forecast and warnings to ensure safety and take necessary precautions to mitigate the impacts of the severe weather.