Sunday's early-morning earthquake came at a busy time for Napa's winemakers -- harvest season.
The Napa Valley Vintners Association says members, especially those near the epicenter just south of the city of Napa, are still assessing damage.
Napa wineries, like Domaine Chandon, are in the first stages of the winemaking process, a time when freshly picked grapes begin fermenting. When the 6.0 magnitude earthquake struck, many wineries lost power, sending winemakers scrambling.
Barry Bergman, winemaking and operations director at Domaine Chandon, explained Sunday afternoon that the winery is roughly 75 to 80 percent through the harvest season and currently has large tanks of fermenting wine that need electricity to stay cool.