San Francisco January 7, 2018 9:51 am Vianey's Forecast: First Major Storm of 2018 NBC Bay Area’s Vianey Arana previews the first major storm of 2018 that will bring widespread rain and gusty winds to the region. US & World Videos 3:48 Jeff's Forecast: Weekend rain timeline 2:42 Forecast: Warm day, Saturday rain 1:43 Kari's forecast: Warm day, Saturday rain 2:04 Jeff's Forecast: Weekend rain update 3:51 Jeff's Forecast: Heat to fade as weekend rain is on the way