Why in News?
Typhoon Dolphin made landfall near Yuhuan in Zhejiang province, becoming the strongest tropical cyclone to hit China so far this year.
About Typhoon
- A typhoon is a tropical cyclone that forms in the Northwest Pacific Ocean.
- It is formed over warm waters of the ocean, which are at least 26.5°C.
- Warm waters provide the needed warmth and moisture for the development of a typhoon.
- The Coriolis force causes the formation of the circulation in a typhoon.
- There is a formation of the tropical disturbance, which intensifies to a tropical depression, a tropical storm, and then a typhoon.
- A typhoon is a storm with winds blowing at speeds of more than 74 mph.
- A typhoon’s structure includes an eye, an eyewall and spiral rainbands.
- The eye is a calmer region at the center of the storm, while the eyewall is where the strongest winds and heaviest rains develop. The spiral rainbands are located around the eye and can cause widespread flooding and damage due to strong winds and heavy rainfall.
