December 21, 2016 6:10 pm Jeff's Forecast: Rain & Major Sierra Snow Dry Thursday with heavier rain by Friday. Chief Meteorologist Jeff Ranieri tracks the changing timeline. Plus, how much Sierra snow is likely just before Christmas in your Microclimate Forecast. US & World Videos 2:17 Cinthia's forecast: Dry second day of the year, rain on the way 2:51 Jeff's Forecast: Friday system brings return of Bay Area rain 3:36 Jeff's forecast: Rain on the way 1:54 Vianey's forecast: Upper 50s, low 60s 2:38 Jeff's Forecast: New Year's Day weather and how much rain Friday