Flood warnings in northern California after powerful New Year’s storm

San Francisco experiences second wettest day on record as one person found dead in submerged vehicle near Highway 99

Flood warnings and watches were in effect on Monday in parts of northern California in the aftermath of a powerful atmospheric river" storm that drenched the state over New Year's weekend.

A new weather system was predicted by afternoon or evening, but the National Weather Service said the rain would be modest until the arrival late on Tuesday of another strong atmospheric river, a long plume of Pacific Ocean moisture.