Why Nevada is at high risk from large wildfirespublished at 14:19 BST
Matt Taylor
BBC Weather
The spread of wildfires is at the mercy of the wind.
The dominant wind direction will of course dictate where the fire goes next, and the speed of the wind determines how quickly the flames spread across the landscape.
Large fires can almost develop their own weather systems that can cause speed and direction to fluctuate greatly. Both are huge challenges for firefighters.
Vegetation - the fuel for the fire - is also key component to why fires spread. While the sparseness of vegetation in a traditional desert landscape would normally inhibit the spread of wildfires, invasive grasses and trees are known to fill those gaps in some areas allowing fires to spread rapidly.
Nevada is a state at high risk from large wildfires due to the combination of its dry climate and abundance of invasive grasses.
A 2012 study by the University of Nevada stated that it can take up to 65 years for desert ecosystems to recover following wildfire.
Image source, Getty ImagesNorthern Nevada on Sunday










