bay area weather 19 hours ago Bay Area heat advisory in effect through Wednesday The entire Bay Area will be under a heat advisory beginning Monday morning and ending Wednesday night, according to the National Weather Service. Kari Hall and Bob Redell report. US & World Videos 2:42 Jeff's Forecast: Fast warming as heat wave pushes temps to 105 degrees 3:20 Excessive heat warning in effect for parts of the Bay Area 3:28 Jeff's Forecast: Heat wave brings dangerous temps up to 105 degrees 3:31 Forecast: Dangerous heat this week 2:32 Kari's forecast: Dangerous heat this week