Philippe Melka estimates that 80% of vineyards may be affected. Those in the south of Napa, from sub-regions such as Pritchard Hill, Stags Leap, and Mount Veeder may be all right. "But in a year like this," he says, "who will pay $300 for any wines?" About 51% of Napa's grapes are cabernet. ... Cal Fire said containment of the 66,840-acre Glass Fire reached 41% Monday night.