Fire History
Napa County sits at the center of California's Wine Country fire zone. The 2017 Atlas Fire (51,624 acres) devastated communities in the Napa foothills east of the city. The 2020 Glass Fire (67,484 acres) burned extensively through Napa and Sonoma counties, destroying hundreds of homes in St. Helena, Calistoga, and the eastern Mayacamas foothills. The 2020 LNU Lightning Complex also burned through portions of the county. Napa's hillside vineyard and residential development creates particular complexity for Zone Zero compliance.
Local Compliance Notes
CAL FIRE Sonoma-Lake-Napa Unit serves unincorporated SRA areas in Napa County. Communities along the eastern Mayacamas Mountains, Silverado Trail corridor, Pope Valley, and Angwin face the most significant Zone Zero obligations. Vineyard properties with structures in FHSZ areas are subject to the same compliance requirements as residential properties.
Neighborhoods in Zone Zero
High-FHSZ communities in Napa County include Angwin, Pope Valley, Deer Park, St. Helena foothills, Calistoga area, Silverado Trail corridor, Atlas Peak area, and communities in the Mayacamas Mountains along the Sonoma-Napa county line.
Local FAQs
Are winery and vineyard properties subject to Zone Zero? Yes — any structure in an FHSZ, including agricultural buildings, winery facilities, and residential structures on vineyard properties, is subject to Zone Zero requirements. Contact CAL FIRE Sonoma-Lake-Napa Unit for guidance on agricultural property compliance.