Rain-soaked Californians are getting another round of storms over the weekend that threaten more flooding, landslides, hail and heavy mountain snow.
The stormy weather came as recovery efforts continue in the state, which has been battered by atmospheric river storms since late December, leaving at least 19 people dead.
A 5-year-old boy also was still missing Saturday after being swept out of his mother's car by flood waters earlier in the week. Local authorities temporarily suspended the search for the boy, Kyle Doan, Saturday afternoon due to "unsuitable" weather, the San Luis Obispo Sheriff's Office said on Facebook.
Forecasts show rain hitting rural areas in Northern California particularly hard this weekend. Previous storms have soaked and damaged the heavily populated San Francisco Bay area and surrounding coastal communities.
"Each round of rain falling on top of saturated and unstable ground will enhance the risk of new landslides and debris flows," AccuWeather Meteorologist Reneé Duff said.
There were already reports Saturday of significant flooding in parts of Napa County, the heart of Northern California's wine region, according to the county's sheriff's office. Flood warnings were issued north of San Francisco Bay, including Napa, Marin, Sonoma and Mendocino counties. A mudslide prompted road closures near Dublin, California., according to the California Highway Patrol.
Atmospheric rivers, sometimes called "rivers in the sky," form when a line of warm, moist air, usually coming from near islands across the Pacific Ocean to the West Coast, falls as heavy rain when it reaches cooler air over land.
Another atmospheric river is expected to hit the state Monday.
"I know how fatigued you all are," Gov. Gavin Newsom said Friday, urging caution ahead of incoming storms. "Just maintain a little more vigilance over the course of the next weekend."