November 26, 2019 1:15 pm Digital Weather Explainer: What Is a Bomb Cyclone? NBC Bay Area meteorologist Kari Hall breaks down the incoming storm and the so-called “bomb cyclone” set to hit the West Coast. US & World Videos 3:07 Cinthia's forecast: Sunny, breezy, warming ahead 3:06 Rob's forecast: Clearing and warming ahead 3:19 Bay Area forecast: Clearing, warming ahead 2:51 Cinthia's forecast: Spring storm, cooler temperatures 2:58 Jeff's Forecast: Saturday rain drops temps and brings major Sierra snow