We had snow at Pinnacles on Tuesday, as well, with over an inch on the ground up in the High Peaks for a number of hours (and with some snow still on the ground higher at North Chalone Peak). I hiked the High Peaks Trail loop as clouds were clearing, then the weather changed into a blizzard of flakes near Condor Crag. It's been more than 10 years since I can remember seeing measurable snow accumulate at the park.