July 29, 2011 6:02 pm Warm Weekend & Sierra Thunder. A southerly flow of humid air and moisture will be pumped into the Bay Area. While the lower elevations look dry right now the mountains could continue to see isolated thunderstorms. US & World Videos 2:55 Bay Area forecast: Breezy weekend 2:40 Cinthia's forecast: Gusty coast, inland warmth 2:20 Cinthia's forecast: Sunny, breezy weekend 3:49 Cinthia's forecast: Sunny and breezy weekend 2:21 Forecast: Sprinkles and windy today