03 Dec 2021 | 02:59 PM UTC
New Zealand: Adverse weather forecast across parts of western and southwestern South Island through at least Dec. 5
Adverse weather forecast across parts of western and southwestern South Island, New Zealand, through at least Dec. 5. Disruptions possible.
Event
Heavy rains are forecast in parts of western and southwestern South Island through Dec. 5. The affected areas include parts of Southland and West Coast regions. 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): Westland District from Otira southwards; up to 50 cm (20 inches) of rain is forecast Dec. 3-5.
Heavy Rain Watch: Fjordland District north of Doubtful Sound.
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.
