Cyclone Vaianu Triggers Red Warnings for New Zealand’s North Island

MetService has issued red severe weather warnings for several areas of New Zealand’s North Island as Cyclone Vaianu approaches, with the most damaging effects expected to hit from the evening of April 11, 2026.

The highest level of alert is currently in place for the Coromandel Peninsula, Great Barrier Island, Bay of Plenty, and Rotorua. Meteorologist John Law stated that the cyclone is on a path toward the country and is expected to bring heavy rain, large swells, and damaging winds.

Wind and Rain Forecasts

A red level heavy wind warning for the Coromandel Peninsula and Great Barrier Island was extended to run for 20 hours, from 10 a.m. On April 11 to 6 p.m. On April 12. Gusts in exposed areas could reach 130 km/h, while other forecasts indicate gusts of up to 140 km/h for the Coromandel region.

MetService has also issued orange level heavy rain warnings for the Kaweka and Ruahine Ranges from 3 a.m. To 9 p.m. On April 12, and for the Tararua District from 11 a.m. On April 11 to midnight on April 12. Earth Sciences NZ has predicted that some locations in the upper North Island could receive more than 200mm of rain within an 18-to-24-hour period.

While the North Island faces the brunt of the storm, eastern Marlborough in the South Island is the only other area under a warning, where an orange heavy rain warning is currently in place.

Regional Impact and Emergency Measures

In the Coromandel, officials are preparing for a significant wave event on eastern beaches, with the peak expected on the morning of April 12. Thames Coromandel Civil Defence and Emergency manager Brian Carter warned that the storm could cause coastal inundation and potential slips throughout the district.

To mitigate flooding, the Thames Coromandel District Council began providing sandbags and sand from various locations starting April 9, with availability continuing through April 11.

In Tauranga, the mayor has declared a state of emergency as risks from the cyclone grow, with warnings urging residents to seriously consider self-evacuating due to flooding risks.

Other disruptions include the potential closure of the Auckland Harbour Bridge due to strong winds. FIFA World Cup qualifying matches scheduled for Hamilton on April 12 were moved to April 11 to avoid the worst of the weather.

Safety Warnings and Infrastructure

Authorities have warned that the system could cause widespread damage and poses a threat to life from falling trees and flying items. Residents are advised to stay indoors, seek sturdy shelter away from trees, and avoid travel.

Emergency Management and Recovery Minister Mark Mitchell described the storm as potentially significant and damaging. In the Coromandel, campground owners have been instructed to ensure campers are moved away from flood-prone areas, and back-up power preparations are being made for critical infrastructure.

Stay indoors or seek sturdy shelter away from trees. Avoid travel. Be ready for power and communication outages.

MetService

The center of the cyclone was located 500km north of New Zealand at 1 p.m. On April 11, though its associated winds and cloud cover were already affecting the North Island. Most of the rain and wind are expected to hit on April 12, eventually reaching the upper South Island by early afternoon of that day.