September 26, 2016 5:50 pm Loma Prieta Fire & Jeff's Forecast Very hot conditions helped spread a fire that started at Loma Prieta. Chief Meteorologist Jeff Ranieri tracks the Microclimate Forecast and when much colder air arrives with the chance of showers. US & World Videos 2:58 Jeff's Forecast: Saturday rain drops temps and brings major Sierra snow 3:25 Bay Area Forecast: Storm brings rain, colder temps and big Sierra snow 2:31 Forecast: Rainy Saturday ahead 2:12 Kari's forecast: Rainy Saturday ahead 2:48 Jeff's Forecast: Dry Friday; rain returns this weekend