Fire crews in Northern California kept the Pickett Fire from spreading overnight, holding the blaze at roughly 6,803 acres while nudging containment to 15%, according to the California Department of Forestry and Fire Protection (Cal Fire). The wildfire ignited Thursday near Calistoga in Napa County’s rugged hills and has since scorched about 10 square miles of grass, brush and timber left over from the 2020 Glass Fire. Napa County Chief Executive Officer Ryan Alsop declared a local state of emergency on Sunday to unlock additional resources. About 150 residents remain under mandatory evacuation orders and another 360 are on standby as the fire continues to threaten between 500 and 600 structures, including several wineries. No buildings have been reported lost. More than 1,200 firefighters, supported by ten helicopters and night-flying aircraft, are working steep terrain and triple-digit heat to reinforce control lines and douse hotspots. The Bay Area Air Quality Management District extended an advisory through Wednesday as smoke drifts over Napa, Sonoma and Solano counties. The cause of the blaze is under investigation. The Pickett Fire is one of several large western wildfires taxing resources. In central Oregon, the Flat Fire has expanded to almost 22,000 acres, destroying four homes and keeping about 4,000 residences under varying evacuation levels while crews struggle with low humidity and erratic winds.