[blue_large]Sonoma Valley AVA[/blue_large]
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Sonoma Valley AVA is known for its unique terroir with Sonoma Mountain protecting the area from the wet and cool influence of the nearby Pacific Ocean. The Sonoma Mountains to the west help protect the valley from excessive rainfall. The cool air that does affect the region comes northward from San Pablo Bay through the Carneros region and southward from the Santa Rosa plain. Sonoma Valley has played a significant role in the history of California wine.