Mendocino National Forest
U.S. Forest Service
825 N. Humboldt Ave.
Willows, CA 95988
The August Complex continues to actively burn across the western half of the fire. When the fire receives clear air like yesterday, fire activity picks up. This increases smoke production with significant smoke and visible smoke columns/plumes.
High pressure remains, although slightly weaker. Smoke that is trapped in valleys will remain with widespread Unhealthy air. There could be some improvement Monday as winds push smoke west. This may allow for improved air quality for communities east of Interstate 5. Communities on the west half of the Sacramento Valley near canyons could see periods of Very Unhealthy air each morning/night.
To scour out smoke trapped in the valley, it will take a large storm system. At this time, there is no system forecast through at least Wednesday. However, a storm system is possible late next week. This could provide enough southwest winds to help scour the Sacramento Valley out with improved air quality. Stay Tuned!