New Zealand often gets hit by storms as it lies in the ‘Roaring Forties’, between 40 and 50 degrees latitude south, where mild air temperatures from the north meet cooler air from the south.
A storm is a disturbance of the atmosphere that can cause strong winds, rain, thunder, lightning, hail, heavy snow and rough seas. A strong wind warning is issued by the MetService when winds of more than 87 kilometres per hour (kph) are expected over land.
Tropical cyclones are large revolving storms that develop in the tropics. They are also called hurricanes or typhoons. They have a wind-speed of more than 120kph.
Tropical cyclones usually weaken as they meet the cooler sea temperatures around New Zealand, but sometimes they can cause major damage. In 1988 Cyclone Bola caused more than $200 million in damage, even though it was no longer a tropical cyclone by the time it reached our shores.
Storms can destroy roads, railways, bridges and buildings. Crops can be ruined and livestock killed. At sea, ships are at risk (the ferry Wahine sank during Cyclone Giselle in 1968, with the loss of 51 lives). Dangers from storms include fallen trees and poles, torn-off roofs, fast-flowing currents in streams and rivers, flying objects, landslides, and flooding. Coastal areas can suffer from storm surges, which are extra-high waves caused by low pressure in the air above the sea that causes the sea-level to rise.
Listen to the radio for information.
Bring pets inside.
Clear away anything outside that may fly around in the wind.
Put tape across large windows to prevent them from shattering.
Close all windows.
Close all curtains.
Stay away from doors and windows.
Open a window on the side of the building away from the wind - this will lessen pressure on the roof.
Stay away from metal and electrical fixtures.
Stay indoors and listen to the radio.
Avoid dangling and broken power lines.
Find out more by reading online.
Choose one of these resources to email to a friend or family member:
Make a plan with your family to get through an emergency. Think about the things you need every day and work out what you would do if you didn't have them.
Make your plan – print it out, stick it on the fridge and make sure everyone knows the plan.
Go to our interactive map to find out if there have been storms in your local region.