Santa Rosa, Calif.—The Fourth Annual Sonoma County Barrel Auction is scheduled to take place Apr. 20, 2018 at MacMurry Estate Vineyards. The auction, hosted by the Sonoma County Vintners Association, will directly follow the 10th Annual Sonoma Summit, a three-day conference on Sonoma County wines, to be held Apr. 16-18. The 2017 auction raised $794,500 and, to date, the event has generated nearly $2 million in funds supporting Sonoma County Vintners marketing initiatives. Trade registration for the 2018 event is now open. sonomawine.com/barrelauction