Today Mauricio pulled Zinfandel grapes for sampling of sugars and acidity at Snows Lake Vineyard in Lake County. He amended the info, though - it's actually Primitivo (Clones 3 & 4).
The upper blocks are at 25.4 brix and a pH of 4 ... he says the lower blocks are still at 22 brix. It's likely we will hand-harvest the two upper blocks (one on an eastern-facing hill and the other adjacent on a western-facing hill) next week. Later on the lower ones.
The Sauvignon Blanc from Dancing Crow Vineyard isn't as close to being ready - Mauricio's current guess is September 14th or thereabouts.
He's also beginning to look at Merlot and Cabernet from Totem Ridge Vineyard - Cabernet is much later ripening - it will probably be ready in mid-October.