every several years on the higher peaks of the Berkeley Hills.
In the late spring and early fall, strong offshore winds of sinking air typically develop, bringing heat and dryness to the area. In the spring, this is not usually a problem as vegetation is still moist from winter rains, but extreme dryness prevails by the fall, creating a danger of wildfires. In September 1923 a major fire swept through the neighborhoods north of the University campus, stopping just short of downtown. (See 1923 Berkeley fire). On October 20, 1991, gusty, hot winds fanned a conflagration along the Berkeley�Oakland border, killing 25 people and injuring 150, as well as destroying 2,449 single-family dwellings and 437 apartment and condominium units. (See 1991 Oakland firestorm)
