Hazards of tropical cyclone

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Impacts of tropical cyclones

Social impacts

New Orieans(US of Americas)

looting and rape become common

Unhygienic

1 million people homeless

Houses destroyed

people become homelessness

spread of diseases transmitted by insects

spread of water-borne diseases

physical infrastructure

water pipes or pumps

Examples

destroyed

Economic impacts

e.g

damaged/destroyed 30 oil platform

closure of 9 refineries

unemployment

Effects

total economic impact

may exceed $150 billion

Causes

loss of income

damaged crops

Why?

food shortage

cost to repair the damaged property and infrastructure

Physical impacts

E.g.

Manila

tropical cyclone

80%of health centres were destroyed

difficulties in distributing food and medicine to those who required

Philippines

where?

2009

When?

Typhoon Ketsuna

serious damage to the road networks

How?

damage any struture

houses, buildings, infrastructure such as bridges and roads

Torrential rains

heavy rain of 250mm

caused massive flooding destroying 9 bridges

How

almost 1 million people to be without power

Effects on people

heavy rainfall in a short period of time

cause inland flooding

Storm surges

What?

USA

Where?

when?

waves of 3 to 10 metres

what?

how?

80% of the city New Orieans was flooded

causes of the flood

more than 1200 deaths

effects on people

fast moving floodwater

carry debris that can injure people

people will drown

damage properties and farmlands

massive flooding

effects

sudden rise of the sea level

what is it

low air pressure and strong winds

push the water towards the coast

creating huge waves

intense low pressure in the eye

sea level to rise

causes

Wind damage

Hurricane Katrina

What

2005

When

wind speed 200kn/h when hit New Orieans(USA)

What? and Where?

$108 billion in property damage

effect