17 May 2021 | 05:09 AM UTC
New Zealand: Heavy snowfall, strong winds forecast to continue in parts of South Island through at least May 18.
Heavy snowfall, strong winds forecast in southern New Zealand through at least May 18. Transport disruptions, power outages possible.
Event
Heavy snowfall and strong winds are forecast to continue in southern South Island through May 18. The Meteorological Service of New Zealand (MetService) predicts that heavy snowfall will impact Fiordland, Southland, Central Otago, and Clutha through the evening hours of May 18, while a Heavy Snow Watch remains in effect for other areas through at least 18:00 May 18. Strong winds are likely to affect the region as the system moves eastward, especially in coastal Clutha, Dunedin, and Southland. Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.
Hazardous Conditions
Authorities predict as much as 20 cm (8 inches) of snow could fall above 300 meters (984 feet) in Fiordland. Lesser amounts are forecast in other areas of southern South Island, though officials predict that snowfall will occur down to 200 meters (656 feet). In addition to the heavy snow, strong wind gusts will likely lead to periods of blowing and drifting snow; decreased visibility is likely in mountainous areas. Blizzard conditions are possible. Sporadic power outages are possible throughout the affected area.
Transport
Heavy snow will likely make driving hazardous in some areas; authorities could implement temporary road closures or detours in such locations. Mountain passes and tunnels could close as a precautionary measure during periods of intense snowfall. MetService has issued Road Snowfall Warnings for Lewis Pass (SH7), Arthur's Pass (SH73), Porters Pass (SH73), Haast Pass (SH6), Lindis Pass (SH8), Milford Road (SH94), and Crown Range Road. Flight delays and cancellations are possible at regional airports, especially in areas where strong winds are likely. Authorities may temporarily suspend port operations along the South Pacific Ocean and Foveaux Strait if strong winds trigger hazardous sea conditions, impacting freight and passenger maritime traffic.
Advice
Monitor local media for weather-related updates and advisories. Seek updated information on road conditions before driving or routing shipments through areas where severe weather is forecast; plan for possible delivery delays throughout the affected area. Allow extra time to reach destinations and carry an emergency kit and warm clothes if driving is necessary, especially on secondary or rural routes that could become impassable. Charge battery-powered devices in the case of prolonged electricity outages.
