Red Flag Warning issued September 20 at 4:17AM PDT until September 20 at 5:00PM PDT by NWS

…Red Flag Warning through 5 pm this afternoon… .A weather pattern shift will bring increased northerly winds and low humidities. In addition, very dry fuels will result in critical fire weather conditions during this period. The strongest northerly winds and critical humidity levels are expected to be in the North Bay Mountains, as well as the East Bay Hills and Diablo Range, and