The first of two storms arrived in Southern California, Flood of the century expected on Sunday

The most significant rainfall fell early Thursday morning during rush hour. The heaviest rain came down from 6 a.m. until 12 p.m. in Los Angeles County and from 9 a.m. until 12 p.m. in Orange County and Inland Empire. The heaviest snow will continue to fall in the San Bernardino and Riverside mountains until 3 p.m. While there may be a brief respite after Thursday’s storm drenches Southern California, another atmospheric river – likely stronger – is poised to move across the region beginning Sunday.