Such cloud formations create rain, lightening and thunderstorms. Drizzle can also result from this cloud formation, but not rain. Weather Maps -Weather maps generally divide the state of California into three sections. Central California extends from Point Conception to the middle of the Golden Gate Bridge. Northern California is the area above this, and Southern California the area below it.
Fronts mean areas with a noticable increase or decrease in temperture, i.e. warm and cold fronts .
Reno is colder in Winter then Sacramento because of the higher elevation. In order to properly compare the temperture of two separate areas, they must have the same elevation. Air Pressure -A barometer measures the weight of the air. A high pressure area is one in which air is present, a low pressure area is one which exhibits no air, such as a vacuum. Pressure is measured to the tenth.