 |
| Cyclone - Image by WikiImages from Pixabay |
1. Tropical cyclones cause significant impacts on life and property due to associated storm surge, flooding, extreme winds, tornadoes and lighting.
2. It is a rapid rotating storm originating over tropical oceans from where it draws the energy to develop.
3. Eye is a central part of the system with diameter typically around 200 to 500 km (can reach 1000 km) where weather is normally calm and free of clouds.
4. Wind blows counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
5. Location specific terminology:
· Hurricane- Caribbean Sea, the Gulf of Mexico, the North Atlantic Ocean and the eastern and central North Pacific Ocean
· Typhoon- western North Pacific
· Cyclone- Bay of Bengal and Arabian Sea
· Severe tropical cyclone- western South Pacific and southeast Indian Ocean
· Tropical cyclone- southwest Indian Ocean
6. Designation of Tropical cyclone on the basis of maximum sustained wind speed of:
· <63 km/h -Tropical depression
· >63 km/h -Tropical storm
· >116 km/h - Hurricane, typhoon, tropical cyclone, very severe cyclonic storm
7. Saffir-Simpson Hurricane Wind Scale with maximum sustained wind speeds of :
· 119-153 km/h. - Category 1
· 154-177 km/h. - Category 2
· 178-209 km/h. - Category 3
· 210-249 km/h. - Category 4
· >249 km/h. - Category 5
Comments