18 Feb 2022 | 01:55 AM UTC
New Zealand: Adverse weather forecast across much of South Island and far southern North Island through at least early Feb. 20 /update 1
Heavy rain, strong winds forecast across southern and central, New Zealand through at least early Feb. 20. Disruptions possible.
Event
Heavy rains and strong winds are forecast in much of South Island and far southern North Island through at least early Feb. 20. Forecast models indicate that a front is likely to track northeast across South Island through late Feb. 19 before moving over southern North Island, bringing heavy rain to parts of central and southern New Zealand, and possible severe gales to parts of South Island. As of Feb. 18, the New Zealand National Meteorological Service has issued the following watches and warnings:
Orange Heavy Rain Warning (second-highest level on a three-tier scale): Fiordland and the ranges of Westland south of Otira; 7-10 cm (3-4 inches) of rain forecast with thunderstorms possible.
Yellow Heavy Rain Watch: ranges of Buller, Marlborough, Southland, Wellington, and Westland from Otira northwards.
Yellow Strong Wind Watch: Canterbury High Country, Fiordland, Queenstown Lakes District, and Stewart Island.
Authorities may issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.
Transport
Floodwaters and debris flows may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. The disruptive weather may cause some delays and cancellations at regional airports. Authorities may temporarily suspend port operations if strong winds trigger hazardous sea conditions, impacting freight and passenger maritime traffic. Flooding could block regional rail lines; freight cancellations are possible in areas that see heavy rainfall and potential track blockages.
Disruptions triggered by inclement weather and resultant hazards, such as flooding, could persist well after conditions have improved - it could take days before any floodwaters recede and/or officials clear debris. If there is severe damage to infrastructure, repair or reconstruction efforts may result in residual disruptions.
Advice
Monitor local media for weather updates and related advisories. Confirm all transport reservations and business appointments before travel. Make allowances for localized travel delays and potential supply chain disruptions where severe weather has occurred. Charge battery-powered devices in case of prolonged electricity outages.
