Authorities are still uncertain about the cause of the devastating fires in the Los Angeles area. However, one thing they do know is how the flames have been spreading: through embers. The fires, which began last Tuesday, have claimed the lives of at least 24 people and destroyed over 12,000 structures. Fueled by strong winds, the flames have been aided by these embers, which not only increase the oxygen supply for combustion but also carry the fire to unburned areas.
Contrary to popular belief, experts explain that most homes destroyed by wildfires are not engulfed by a wall of flames but are actually ignited by airborne embers. Embers, also known as firebrands when airborne, can be various burning debris such as wood, vegetation, or even pieces of houses. These embers can vary in size from tiny specks to larger chunks.
Embers involved in wildfires differ significantly from those seen rising from a campfire. They have the ability to travel long distances, carried by the wind and igniting new fires. In 2017, embers crossed a six-lane highway in Northern California, setting ablaze businesses and homes in the Coffey Park neighborhood.
Researchers are studying embers to understand how they are produced and how they contribute to the spread of wildfires. By examining firebrands, experts aim to improve models predicting fire behavior and develop defensive strategies for protecting homes. Through experiments and research, they hope to enhance preparedness for future wildfire incidents.
Overall, with the increasing frequency of wildfires, there is a growing need to incorporate measures to address the risks posed by embers and to better prepare for their potential impact in vulnerable areas.
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