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PPT 10 - Coggle Diagram

- - - - Jet stream followed an abnormally southern direction in 2007
      - Meant that anticyclonic systems which usually arrive from the eastern Atlantic failed.
      - Resulting weather patterns produced enormous rainfall in England and Wales.
        
        Resultant weather conditions
        
        Precipitation for June was 190% more than the average from the previous 30 years. It was the wettest June on record. This meant that all stores were full before the summer even began.
        
        The rainfall totals for May to July 2007 were the highest on record for England and Wales since records began in 1766.
  - - - During the summer, groundwater levels tend to fall and the soil tends to dry out.
      - Due to early summer rainfall, soils were saturated and ground water levels were significantly higher than normal.
      - The result was a much lower infiltration or percolation capacity than during an average year.
  - - - Buckingham
      - Birmingham
      - Ludlow
      - Leamington Spa
      - Stratford
  - - - Businesses and homeowners paid more than 2 billion of this.
  - - - Loss of piped water for over 350,000 customers.
  - - - The majority of deaths were in rural areas as services did not support rural areas
- - - - 2007 UK floods
  - - - Dropped 27 trillion gallons of rain
      - Made landfall as a category 4, then downgraded to a tropical storm.
      - Americans are building on flood plains, worsening flood events by leading to increased damage costs.
      - Flooding up to 9 metres in height.
      - Hurricanes are natural, but humans are worsening their impacts.
- - - - A depression can be recognised by an area of closely spaced isobars, often in a roughly circular shape, where pressure is lower than surrounding areas.
      - Often accompanied by fronts.
- - - - Leads to soil erosion and heavy runoff