Ahead of a storm system expected to bring heavy rain , hail and snow to California , the US ' National Weather Service placed large areas of the north of the state on a flood warning . The storm is expected to drop 13 cm of rain in the San Diego region next day , further saturating land that has received heavy rainfall since the start of the year . The advisory comes after a storm in Southern California killed at least five people last year . “We could see flooding in areas that haven’t flooded in a long time and there will be additional stress on levees, rivers, creeks & streams,” the service said. California is especially susceptible to flooding because wildfires have left areas with severely scarred - hills , the California Governor 's Office of Emergency Services said .
Ahead of a storm system expected to bring heavy rain , hail and snow to California , the US ' National Weather Service placed large areas of the north of the state on a flood warning . The storm is expected to drop 13 cm of rain in the San Diego region next day , further saturating land that has received heavy rainfall since the start of the year . The advisory comes after a storm in Southern California killed at least five people last year . California is especially susceptible to flooding because wildfires have left areas with severely scarred - hills , the California Governor 's Office of Emergency Services said .