California
If 50 American states produce wine, Californian production alone represents approximately 85% of the
production of the country, which makes this state the 4th producer in the world behind Italy, France and Spain. The climate is strongly influenced by the Pacific Ocean which at this latitude is a cold ocean. The wine-growing regions located near the Pacific have an oceanic climate becoming Mediterranean the further inland you go from the ocean and it becomes more continental near the Sierra Nevada. Bays and openings to the sea, such as San Pablo Bay, act as thermal regulators on viticulture, particularly in Napa and Sonoma Valley.
The sub-region: Andersen Valley
Anderson Valley is one of California's northernmost wine regions, located approximately 100 miles north of the city of San Francisco. Anderson Valley is located 10 miles from the Pacific Ocean. She is perfectly positioned and shaped to channel the ocean breezes and fog of the Pacific coast. This is one of the coolest wine growing regions in California.