Lightning-Caused Wildfires
As the graphic shows, people cause most wildfires. But lightning-ignited fires burn by far the most territory.
Top 10 Hardest Hit States of 2011
A look at which states were hit hardest by extreme climate and weather events in 2011.
Wildfires in the West
In 2006, wildfires burned seven million acres in the West, the equivalent area of five of the country's largest national parks.
In Nevada, Fires Follow Rain
In a desert state like Nevada, heavy rains promote plant growth but can lead to more wildfires.
In Montana, Fires Follow Drought
In a forested state like Montana, hotter and drier years leave forests more susceptible to large wildfires.
Can Rain Cause More Fire?
Volatile precipitation patterns, with heavy rains followed by drought, can lead to ideal conditions for wildfires in some states.
Acres Burned in Washington
Wildfires in Washington State have increased significantly in recent years, a shift that appears linked to climate change.
Northern Rockies Forest Wildfires
Number of large wildfires on forested federal lands in the Northern Rockies region, including western Montana.
