weather hazards Flashcards
tropical storm
low pressure, spinning storm with high winds and torrential rain
conditions for tropical storms to develop
temperature
air pressure
rotation
triggers
conditions - temperature
ocean temperatures must be 26-27 degrees
conditions - air pressure
unstable so tht warm air rises more rapidly and clouds can form
conditions - rotation
the corolis effect, the storm spins because the earth is spinning – storms occur at a certain distance from the equator
conditions - triggers
- pre existing thunderstorm
- spot of high sea surface temperature
- area of low pressure
formation of a tropical storm
- warm moist air rises, leaving an area of low pressure below – warm surrounding air moves into the low pressure
- risen air cools and consences into thunderstorm clouds
- coriolis effect spins the clouds
- additions of energy allow for faster winds
- eye of the sotrm is extrememly low pressure
- when a storm reaches the coast, it creates a storm surge
- when it reaches land, the energy is lost
hazards caused by tropicals storms
- high winds
- flooding
- landslides
- storm surges
primary effects of storm hazards
- eroded beaches
- coastal habitats destoryed
- businesses destoryed
- agricultural land damaged
- drowning
- government buildings destroyed
secondary effects from storm hazards
- water contamination
- animal displacement
- water sources blockage
- rebuilding
- economic decline
- homelessness
- food shortages
- international debt
- global warming
preparedness for storm hazards
- awareness through education
- evacuation plans and training
- satellite image
mitigation for storm hazards
search and rescue
strengthening home
clearing loose debris before storms
adaptation for storm hazards
- move away from risk areas
- design buildings to withstand high winds and flooding
- flood defences
LIC - typhoon haiyan, philippines key info and causes
info:
- category 5
- 170mph winds
- 15m storm surge
causes:
- strong winds adn low atmospheric pressure
LIC - typhoon haiyan primary effects
6k killed
600k displaced
40k homes damaged
90% of tacloban city destroyed
400mm rain flooding
LIC - typhoon haiyan secondary effects
6m lost source of income
landslides and blocked roads
power supplied cut off
airport disrupted
institutions destroyed
looting and violence
LIC - typhoon haiyan immediate responses
international government and aid agencies
1000 evacuation centres set up
UK sent shelter kits
european hospitals helping injured
philippines red cross delivered food aid
LIC typhoon haiyan long term responses
UN, US, Japan and austria donated fianancial and medical support
rebuilding infrastructure
donors supported livelihood opportunities
farming and fishing reestablished
homes built away from flood risk
cyclone shelters to accommodate people
HIC - hurricane katrina gulf coast key information
23rd august - storm developed at coast of bahamas
28th august - category 5 as it headed for mississippi and louisiana, 175mph winds
29th august - new orlenas with 10m storm surge
HIC - hurricane katrina primary effects
100k flooded houses
power/water supply disrupted
1000k died
80% flooded
oil installations damaged
HIC - hurricane katrina secondary effects
1m displaced
5m elft without power
reduction in tourism
$200bn financial cost
HIC - hurricane katrina immediate responses
usa government provided $50 funds
UK government sent food aid
national guard mobilised
red cross helped 600k people medically
HIC - hurricane katrina long term responses
200 miles of levees strengthened
congress provided $16bn to rebuild infrastructure
FEMA arranged over 10k homes to be leased
emergency services made more efficient
invested in better prediction technologies
