The first storm from the tail end of an atmospheric river brought light to moderate rain throughout the Los Angeles area. A second storm is already making its way toward the region. The National Weather Service said the first storm system underperformed across most of the area.

California's weather remains cool and cloudy, with rainfall focused north of Los Angeles County and lighter showers in the south.

Cooler, cloudier conditions and periods of light rain are forecast in San Diego County through Friday night as a weakening atmospheric river moves southward into Southern California, according to the National Weather Service.