A rare Red Heavy Rain Warning has been issued for Dunedin and parts of the lower South Island, as severe weather threatens dangerous flooding, heavy snow, damaging winds, and widespread travel disruption across the region. Emergency management agencies are urging residents to prepare immediately as forecasters warn of potentially life-threatening conditions.
MetService upgraded its heavy rain alert to a red warning for coastal Dunedin and Clutha, with between 80mm and 120mm of rain expected from Sunday afternoon through Monday morning. Officials warn that the intense rainfall could lead to dangerous river conditions, significant flooding, landslides, and road closures, with some communities at risk of becoming isolated. The red warning remains in effect until 9 a.m. Monday.
The Dunedin City Council has activated its Civil Defence Emergency Operations Centre as a precaution. Council contractors have been clearing stormwater systems, inspecting drains, and preparing flood-prone areas throughout the city. Public sandbag collection points have also been established at the Dunedin Ice Stadium and Mosgiel Memorial Park to help residents protect homes and businesses from rising water.
Authorities have warned that flooding may affect low-lying suburbs, particularly South Dunedin and the Taieri Plain, where heavy rainfall has historically caused significant damage. Residents living near rivers, streams, and other vulnerable areas have been advised to monitor official updates closely and prepare for possible evacuations if conditions deteriorate. Emergency officials stress that floodwaters can rise rapidly and should never be entered on foot or by vehicle.
In addition to flooding concerns, the severe weather system is expected to bring heavy snow to inland Otago and northern Southland. Snowfall warnings remain in effect for several alpine routes, including Haast Pass, Lindis Pass, Crown Range Road, and sections of State Highway 1 north of Dunedin. Motorists have been urged to delay unnecessary travel and carry emergency supplies if driving through affected areas.
Emergency management agencies continue to coordinate with local councils, transport authorities, and utility providers as preparations intensify. Officials are encouraging residents to secure outdoor items, avoid unnecessary travel during the storm, and stay informed through official weather alerts and civil defence notifications. Schools, businesses, and public services are also monitoring conditions in case further disruptions become necessary.
Forecasters warn that weather conditions could worsen as the storm progresses, with flooding, slips, and gale-force winds posing ongoing risks throughout the lower South Island. Authorities will continue monitoring river levels and rainfall totals while responding to any emergencies that arise.
Residents are urged to remain vigilant, heed all official warnings, and be prepared for rapidly changing weather as one of the most significant storm systems of the winter impacts Dunedin and surrounding parts of New Zealand’s South Island.