Yountville received its distinction as an AVA in 1999 and is a sub-appellation of the Napa Valley AVA. The AVA is sitting on 8,000 acres, centered on the town Yountville, California. Volcanic soils on the eastern flank are similar to the neighboring Stags Leap District but also features centuries-old coastal deposits, and both sedimentary and alluvial soils exist to the west, interspersed with sandy and gravelly loam, as well as a little clay. No other area in all the Napa Valley has this particular geomorphic combination and pronounced soil differences. The climate of the region consists of cool marine air currents from San Pablo Bay to the south, allowing for cooler temperatures year round. These milder temperatures allow the grapes of the region plenty of time to develop unique flavor characteristics. The region currently produces Cabernet Franc, Cabernet Sauvignon, Chardonnay, Gewurztraminer, Malbec, Merlot, Petit Verdot, Petite Sirah, Pinot Blanc, Pinot Noir, Sangiovese, Sauvignon Blanc, Syrah, and Zinfandel.