October 13, 2015 5:50 pm Jeff's Forecast: T-Storm Chance & El Nino Outlook A storm moving in from the south will increase our thunderstorm chances. Chief Meteorologist Jeff Ranieri tracks 2 different chances of rain. Plus, details on El Nino’s strength and outlook. 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