typhoon hayan

• primary effects

  • 6m storm surge which flood 1km inland
  • 6,000 deaths
  • 600,000 hectares of farmland affected
• typhoon hayan

  affected most of Philippines

  category 5 storm

  190mph windspeed

  began 6 degrees north of the equator
• secondary effects

  • 6 mil jobs lost
  • food shortages +disease outbreak (cholera)
  • power cuts for 1 month +
• immediate response

  • Australia -$30 mil dollars aid
  • airports opened after 3 days
  • 800,000 ppl evacuated
• Longterm response

  • storm surge warnings developed
  • no build zones on some islands
  • Oxfam replaced damaged fishing boats
• monitoring and predication

  • satellite images - to predict the path of TS so u have time to evacuate + prepare
  • hurricane centers
  • hurricane hunter planes - fly into storms to collect info about there wind speeds ect
• planning

  • evacuation routes
  • education -hurricane preparedness week
  • resources - TS kit + checklist
• protection

  • boarding up windows on houses
  • cutting down large trees near homes to ↓ the risk of damage
• the Coriolis effect

  spinning movement of the earth
• the relationship between tropical storms + the earths general atmospheric circuit

  • happens near the equator bc of ...
  • LP + high temp needed to for air to rise and for condensation, evaporation + strong winds
• what does the Coriolis effect do in creating tropical storms

  • the strong winds to spin up + around the calm center eye of the storm
• formation of tropical storms

  1. hot seas → rising air → LP
  2. winds move under the rising air → strong winds
  3. coriolis effect →the strong winds to move up + around the calm center eye of the storm.
  4. air rises, cools + condenses → large cloud →torrential rain
  5. cool air sinks into the eye, HP, no clouds, calmer winds
  6. as the TS meets land it slows down bc its no longer fueled by the moisture and heat of sea. weakens + disspitates