Heavy smoke from at least seven wildfires, including the 24,000-acre Jerusalem Fire, raging in Northern California is drifting into the Bay Area, according to officials.
Several fire agencies on Saturday reported receiving a high volume of 911 calls from people who mistook the smoke for a fire in their neighborhood.
San Mateo County officials said drift smoke, which affected the Bay Area's overall air quality, had been reported in Pacifica, Half Moon Bay and Woodside.
Meanwhile, East Bay fire agencies also received a large number of calls. However, when crews investigated the situation, they realized that the haze was caused by drift smoke.