How are extreme weather events increasingly hazardous for people? (b) GapFill

Not all areas of the world are affected by tropical cyclones – they need specific conditions to develop. For example, they can’t occur exactly at the equator because they need enough Coriolis force to develop their spin – a minimum of  519101 ° latitude is needed. But they can’t form too far away – more than 20 ° - as the ocean water would be too  hotcoldwarmshallow. They only develop in the right season, when the surface water has heated enough – usually  early summer and late summerlate spring and early summermid-winterlate summer and early autumn for Atlantic hurricanes. Tropical cyclones are found in the various oceans. The place where they develop is called the  trackplainsourcemouth area. For Atlantic hurricanes, this is in the North  PacificAustralianAtlanticArctic Ocean – often off the western coast of Africa. Typhoons have their source in the  ArcticAtlanticPacificAustralian Ocean in a place called ‘Typhoon Alley’. The path of a tropical cyclone is called its  motorwayroadtracklane.

In the Atlantic, hurricanes are initially blown  backwardseastwardssouthwestwardswestwards because of the prevailing winds, but then usually change direction and travel to the  south-westnorthsouthsouth-east. Tropical cyclones intensify – their wind speed increases as they develop when they pass over warmer water or wind shear is low. But they later dissipate for example, if their energy source is decreased if they travel over colder ocean water or make  landfallrainfallthroughfalltreefall.