>> it gets people excited for voting. >> right now at 5:00, from the bay area and beyond, excitement growing on the left over kamala mar rice becoming joe biden's running mate. the first campaign event is happening today. plus, what harris' addition means for the race to the white house. >>> happening today, the bay area's fourth largest school district heads back to school. sort of. we'll talk about the last-minute twist parents and students need to know before firing up the laptops. >>> and winds of change, triple digit temperatures are headed our way. we are tracking the arrival as "today in the bay" continues right now. >>> good morning to you on this wednesday morning. i'm kris and chez. >> i'm marcus washington. breaking news for this you this morning. the 3.9 quake striking south of orning and monitoring that.