El Niño impacts (winter after onset)


La Niña impacts (winter after onset)


Primary effects: these are directly caused.

  • Alteration of weather patterns which include:
  • Alteration of currents and ocean temperature

Secondary effects: these are some consequenses:

  • Fires
  • Drought
  • Flooding
  • Economic changes, price of heating, food, etc.
  • Political and social unrest
  • Crash of fisheries
  • Famine
  • Plagues (hanta virus)
  • Insect population explosion leading to disease and plagues.
  • Crop failure

Some benefits of El Niño:

  • Fewer hurricanes and other tropical cyclones in the north Atlantic
  • Milder winters in southern Canada and the northern continental United States.
  • Replenishment of water supplies in the southwestern U.S.
  • Less disease in some areas due to drier weather (like malaria in southeastern Africa)