This note pack is a complete summary with diagrams. It summarises all the content for Topic 2 : Climate and Weather Introduction. Chapter 2 :Tropical Cyclones in the Focus Geography Grade 12 Learner's Book.
Terminology
Hurricanes = North America
Willy-willies = Australia
Typhoons = China, Japan, Philippines
Tropical Cyclones = Southern Africa, Madagascar
Wind reversal = winds blows opposite direction as second vortex passes
General Characteristics
● Air pressure very low (940 - 986 hPa) an intense low pressure
● Develop between 5° & 30° North & South of equator
● Develop over tropical oceans where water temperature above 27°
● Form in regions where airflow generally westward, meaning tropical easterly wind belt , east side
continents
● Storms die out rapidly over land because increased friction over land surface & lack moisture
● Speed forward movement east to west 20 - 25km/hr. Wind speed circulating 200 - 300km/hr
● Destruction hurricane force winds, storm surges & heavy rain
, Areas where they from
Air movement inside a tropical cyclone
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