Key keywords: Ledson Fire, California wine country wildfire, Sonoma County fire, wildfire structure threat, Cal Fire wildfire response, Northern California 2024 wildfire, wine harvest wildfire impact, Sonoma Valley evacuation orders First reported at approximately 2:15 p.m. on September 17, 2024, near the intersection of Highway 12 and Ledson Road in unincorporated Kenwood, Sonoma County, the Ledson Fire quickly grew to 127 acres within four hours, with zero percent containment as of 8 p.m. local time, according to Cal Fire’s Sonoma-Lake-Napa Unit. Burning through tinder-dry grass, oak woodland and mature vineyards amid gusty 25-mile-per-hour winds and 92-degree Fahrenheit temperatures, the fire has prompted mandatory evacuation orders for more than 200 households across 15 square miles of the iconic Sonoma wine country, putting dozens of residential structures and multiple award-winning wineries at immediate risk. Cal Fire officials confirmed that at least 62 structures, including 38 single-family homes, 12 commercial winery buildings, and 12 outbuildings, are currently under direct threat from the blaze, which is burning less than a quarter mile from the historic Ledson Winery & Vineyards, a popular 19th-century chateau-style tasting destination that draws more than 100,000 visitors annually. Fire crews have set up defensible space perimeters around the winery and adjacent residential blocks, deploying 210 frontline firefighters, 4 water tenders, 2 fixed-wing air tankers and 3 helicopters to drop water and fire retardant along the fire’s northern edge, where wind is pushing the blaze toward unburned vineyards. The fire comes in the middle of Sonoma Valley’s peak wine harvest season, when 70 percent of the region’s cabernet sauvignon, pinot noir and chardonnay crops are still hanging on vines waiting to be picked. Local small-scale winemakers told reporters that even if the fire does not burn their vines, smoke taint from the blaze could ruin entire batches of 2024 vintage wine, leading to hundreds of thousands of dollars in losses for family-owned operations. An emergency evacuation center has been set up at Sonoma Valley High School, where more than 80 residents had checked in as of Tuesday evening, along with 27 pets. No injuries or fatalities have been reported to date, and the cause of the fire remains under investigation by Cal Fire’s fire prevention team. Local health officials have also issued an air quality advisory for all of Sonoma Valley, warning residents with respiratory conditions, children and elderly residents to stay indoors with windows closed until smoke levels subside.