Unseasonably warm temperatures coaxed grapevines out of dormancy across Western North Carolina in early April. Now, a late frost warning threatens to damage the nascent buds and potentially impact this year's wine grape harvest. The National Weather Service has issued a frost advisory for Buncombe County and surrounding areas, effective from late Thursday night through Friday morning. The concern is particularly acute for vineyards in low-lying areas or frost pockets, where cold air tends to acc