| WEATHER STORY Norman Weather Forecast Office |
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What causes wildfires A spark, in the presence of fuel and oxygen, can cause a fire, which can further spread depending on various weather conditions. Fires can be sparked by natural causes, but most wildfires in the U.S. are caused by human activity. Natural causes include lightning strikes and heat from the sun. Human activity comes from cigarette butts, fireworks, campfires, burning brush, vehicles and machinery. Fuel is usually dry vegetation, such as grass brush, and trees. Oxygen is almost everywhere. Certain weather conditions can make fires bigger, faster, and more dangerous: strong wind, drought, high temperatures and low humidity.
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Data Courtesy of Norman Weather Forecast Office