Current Events: Flooding in Edgecumbe

The whole town of Edgecumbe in the North Island has been evacuated. After all the flooding 2000 people have had to evacuate. Flood waters have affected about 600 homes in the town. Tractors and boats have helped to take people to safety. The rain from Cyclone Debbie has cause the Rangitaki river to burst it's banks. Meteorologists have said that the weather is a once in 500 years event.  In Edgecumbe the water has been told to be 2 metres high in some areas. Police have been saying that they will patrol the evacuated areas and have put some barriers into place to prevent residents returning. Deputy Prime Minister Paula Bennett said the message from the authorities was to " get out and stay out". The storm has also hitting the South Island as well. Kaikoura was cut of by the earthquake in November and is once isolated again because landslides have blocked some roads.
Source: Kiwi Kids News
3 words

• Deputy: A person to take over after the head person. 
• Meteorologists: An expert in weather. 
• Barriers : A fence or an obstacle to prevent movement or access

My opinion : Where I am from I thought it hit really hard however compared to other towns it wasn't as bad. I feel really sorry for the residents in Kaikoura and Edgecumbe because there is a chance they can lose their houses.

I wonder: What causes a cyclone and how do they name them?