A red flag warning of extreme fire danger is in effect with low humidity and dry Santa Ana winds expected through the weekend.
The recent Colby Fire comes amid one of the driest spells in state history. Rainfall has been scarce with little relief foreseen through the winter, and reservoirs and rivers have dwindled to historically low levels.
Now Governor Jerry Brown has officially declared a drought emergency at a press conference in San Francisco. Here to tell us more about what this means is hydrologist Jay Famiglietti, director of the UC Center for Hydrologic Modeling at UC Irvine.