Wildfire smoke could impact air quality from San Francisco to Sacramento to Redding this week as smoke continues drifting from growing blazes burning in remote parts of Northern California.
Thousands of lightning strikes across mountainous terrain of Northern California earlier this month sparked several wildfires, which have slowly grown to thousands of acres in size. The largest blaze was the Green Fire near Shasta Lake, which was 3,371 acres as of Wednesday morning. The Butler Fire, on the border of Siskiyou and Humboldt counties, had torched more than 2,000 acres.
Smaller fires were also burning across Del Norte, Humboldt, Shasta, Siskiyou and Trinity counties.
Winds Wednesday morning began to shift out of the north, pushing smoke toward Redding. Air quality dropped to the unhealthy category at Shasta Lake and the moderate category in Redding. Northerly winds were expected to increase Wednesday night into Thursday, possibly pushing smoke down the Sacramento Valley and into the Bay Area…