Situated in the Sonoma Coast AVA, a wind gap in the coastal mountain range funnels cooling breezes and fog east from the Pacific Ocean through the city of Petaluma and south to the San Pablo Bay. Vineyards are socked in by lingering morning fog on most summer days, where temperatures can swing up to 27º from morning to afternoon. Persistent afternoon breezes require grapes to hang longer on the vine to enable full, rich flavor development.