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  2. Oct 19, 2023 · Four out of five wildfires are started by people, but dry weather, drought, and strong winds can create a recipe for the perfect disaster—which can transform a spark into a weeks- or months-long blaze that consumes tens of thousands of acres.Another possible cause of forest fires is lightning.

  3. The fire generates winds of its own that are as many as 10 times faster than the ambient wind. It can even throw embers into the air and create additional fires, an occurrence called spotting. Wind can also change the direction of the fire, and gusts can raise the fire into the trees, creating a crown fire.

    • Kevin Bonsor
  4. Dec 3, 2021 · How do wildfires spread? Wildfires can fizzle out quickly or spread uncontrolled, consuming thousands of acres of land in a matter of hours. But the intensity and movement of a wildfire ultimately depends on three factors: fuel, weather and topography.

  5. Dec 28, 2018 · Fire arises out of three ingredients: fuel, heat and oxygen. Oxygen is readily available in the air, so that leaves fuel and heat. The fuel is anything that will burn, including brush, grass,...

  6. May 5, 2016 · Wildfires produce their own wind, called indrafts, which can gust up to 90 kilometres per hour and can often overpower the synoptic or large-scale winds that come from the outside. These indrafts...

  7. Oct 23, 2017 · What are wildfires and how do they start? Learn how we can prevent destructive wildfires, and how we can manage wildfires to improve the health of forests. ...

    • Oct 23, 2017
    • 989.2K
    • National Geographic
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