Hurricanes

... Hurricanes What is a Hurricane? A hurricane is a violent tropical revolving storm with heavy rainfall and strong winds. Causes? Step 1: Warm seas 26-27 degrees Step 2: Air above heats up Step 3: Convection Currents occur Step 4: Air rises, cool and condenses- clouds form. Step 5: Warm air encourages evaporation which means that there is plenty of moisture available for rain. Where? In areas of intense low pressure where the air follows a spiral pattern. Over warm moist sea, 8 degrees to 15 degrees north and south of the equator. They normally move westwards and polewards after they reach land - although when they have they do tend to die out due to lack of moisture. When? Normally in late summer and early autumn. Effects? A hurricanes life- span is normally 7- 14 days. The winds average 160 km per hour and very heavy falls from cumulo- nimbus clouds. This can cause: . Flooding . Damage to power and water supplies . Mud slides . Houses are demolished especially

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