NWS Forecast Office San Francisco, CA

Near-critical fire weather conditions are expected in the North and East Bay interior mountains Thursday to Saturday due to offshore winds overnight leading to possible extreme fire behavior and rapid rates of spread. Relative humidities will be as low as 15-30% and wind speeds will be 15 to 25 miles per hour, gusting to 35 miles per hour. Exercise fire weather safety, make an emergency plan, have multiple ways to receive alerts, and stay tuned to forecast updates! Remember: one less spark, one less fire!