In the United States, rescue workers in southern California are searching for survivors after mudslides and flooding in which at least 13 people have died. More than 48 kms of the main coastal road have been closed and police said the scene "looked like a World War One battlefield". <br/><br/>A group of 300 people are reportedly trapped in Romero Canyon neighbourhood east of Santa Barbara, with rescue efforts due to resume at day break. The death toll is expected to rise. More than 50 people have been rescued already but many places are still inaccessible. <br/><br/>Several roads are closed, including the major Highway 101. Some 163 people have been taken to hospital. Twenty had storm-related injuries and four were critically hurt.<br/><br/>