Jack Cohen, a former fire research scientist, highlights that home ignitions during wildfires are often caused by flying embers rather than direct flames. He notes, 'It’s not a wall of flame or radiative heat from a wildfire that overtakes neighborhoods.' This emphasizes the role of scattered ignitions in transforming brush fires into urban fires.
Cohen also explains the mechanics of these ignitions: 'Often it's flying embers landing in flammable spots on and around homes.' He warns that spots like roofs, yards, and ornamental plants are particularly vulnerable to these embers.
In terms of prevention, homeowners can significantly reduce fire risks by maintaining a clear perimeter around their properties. Cohen recommends a 'five-foot perimeter of no flammable materials' and even suggests a more extensive '30-foot perimeter that's lean, clean, and green' for optimal safety against wildfires.
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