Associated Press: Firefighters battled smokey wildfires throughout Northern California on Tuesday – from Mendocino County to the Napa Valley and south to the Big Sur area in Monterey County – after an “unprecedented” lightning storm sparked nearly 850 wildfires. Shifting winds sent the smoke from the hundreds of fires over the San Francisco Bay Area, San Joaquin Valley and Reno-Tahoe area – leading local health officials to declare the region’s air quality “unhealthful.” The …