A. Tropical Storms and Philippines Flashcards
Where are tropical storms called Hurricanes?
When they form over the Atlantic and Pacific Oceans (Americas)
When are tropical storms called Cyclones?
When they form over the Indian Ocean and around Australia
When are tropical storms called Typhoons?
When they form around Japan, East Asia and the Philippines
Between which latitudes do tropical storms form?
5-30°N, 5-30°S
What minimum temperature does an ocean have to reach to form tropical storms?
27°C
In which direction do tropical storms rotate north of the Equator?
Anticlockwise
In which direction do tropical storms rotate south of the Equator?
Clockwise
What is the minimum wind speed required for a tropical storm to be considered a hurricane / cyclone / typhoon?
74 mph
What are the primary hazards of a tropical storm?
- High wind speeds (minimum 74mph)
- Storm surge (typically 6 metres)
- High rainfall (average 9 trillon litres per storm)
What are the secondary hazards of a tropical storm?
- High wind speeds lead to flying debris
- Heavy rain leads to river flooding and mass movement
- Storm surge can lead to contamination of water sources / soil with saltwater
How many people were killed by the October 2012 Hurricane Sandy?
- 250 people killed in 7 countries - 111 in the USA alone
- Outbreak of cholera in Haiti killed over 40 people and infected over 5000 people
What were the primary hazards of October 2012 Hurricane Sandy?
- Category 3 Hurricane = wind speeds up to 110 mph
- Storm surge up to 9 metres in Cuba
- Rainfall up to 260mm = flooding across areas affected
What were the short-term social impacts of October 2012 Hurricane Sandy?
- Cholera outbreak in Haiti killed 40 people and infected over 5000 people
- Refugee camps in Haiti were flooded
- 10 million people in the USA were left without power
What were the short-term environmental impacts of October 2012 Hurricane Sandy?
Key roads and streets were inundated with salt water, contaminating freshwater supplies and leaving roads flooded
What were the short-term economic impacts of October 2012 Hurricane Sandy?
- Losses due to damage and closure of businesses totaled over $65 billion
- New York Stock Exchange was closed for two days
What were the long-term social impacts of October 2012 Hurricane Sandy?
- Over 70 evacuation shelters were opened in NYC
- 100,000 homes on Long Island were damaged or destroyed
What were the long-term environmental impacts of October 2012 Hurricane Sandy?
70-80% of crops in Haiti were washed away - food shortage
Government estimated that ~$24 million would be needed to replace food
What were the long-term economic impacts of October 2012 Hurricane Sandy?
US cities such as Atlantic City struggled from lack of tourism and damage after hurricane - 15m piece of boardwalk washed away, many businesses could not reopen after the storm.
How many people were killed in the November 2013 Typhoon Haiyan?
Over 6300 killed across the Philippines
What were the primary hazards of the November 2013 Typhoon Haiyan?
- Category 5 typhoon = wind speeds up to 195 mph
- Storm surge up to 7.5m high (5m in Tacloban)
- Massively powerful floods
What were the short-term social impacts of the November 2013 Typhoon Haiyan?
- Almost all fatalities in Tacloban city
- Powerlines and communications destroyed leaving millions without electricity
What were the short-term economic impacts of the November 2013 Typhoon Haiyan?
- 90% of all buildings in Tacloban were destroyed by Typhoon
- Overall cost $12 billion
What were the short-term environmental impacts of the November 2013 Typhoon Haiyan?
- Over 600,000 hectares of farmland affected
- Roads blocked by debris and falling trees made aid more difficult to distribute
What were the long-term social impacts of the November 2013 Typhoon Haiyan?
- Rice prices rose by 11.9% after 2014 and there was fighting over food / supplies
- 5 million homes destroyed / made uninhabitable
What were the long-term economic impacts of the November 2013 Typhoon Haiyan?
- 3/4 of farmers and fishermen left without income
- Key infrastructure destroyed leading to slower recovery
What were the long-term environmental impacts of the November 2013 Typhoon Haiyan?
- Oil barge left stranded at Estancia leaked 800,000 litres of oil, contaminating the sea and mangroves 10km inland
- Destruction of 1.1 million tonnes of crops and $53 million worth of rice and seeds led to food shortage in the Phillippines