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What you need to know about Santa Ana winds and California wildfires
Easterly winds bring dry air from the desert that is then forced down over the San Gabriel and San Bernadino mountains, drying it further. The wind gets funneled through those mountain passes, causing wind gusts up to 70 mph, according to AccuWeather chief meteorologist Bernie Rayno.
When those heavy winds are accompanied by low humidity and high temperatures, the Southern California region is at significant risk for wildfires.
When the humidity drops to single-digit percentages, vegetation both living and dead is significantly dried out, making it even more flammable.
The origin of the wind’s name has never been settled, but most discussions mention Santa Ana Canyon in Orange County.
The Associated Press contributed to this report.
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