Owners Clay and Margarita Shannon will host the event at the vineyards, 13888 Point Lakeview Road, Lower Lake, from 11 a.m. to 4 p.m.
The ribbon cutting ceremony will take place at 11:30 a.m.
Congressman Mike Thompson will be a special guest.
Enjoy picturesque views of the vineyards overlooking Clear Lake and Anderson Marsh. Taste Vigilance wines in the renovated 1931 ranch home.
Try delicious appetizers from local restaurants and barbecued meats from local 4-H raisers. There will be harvest fun, live music, raffles and grape stomping.
The cost per person is $20, which includes a Vigilance wine glass, plate to enjoy a variety of foods, entry ticket into raffles for wine-related prizes and a chance to win the grand prize of a one-year Vigilance Wine Club membership. All current Shannon Ridge Wrangler wine club members will not be charged the above entry fee.