A strong storm system that brought relentless winds, rain and snowfall to California this week was expected to ease Friday but there was still a risk of more mudslides and flooding, forecasters said.

After a stormy Christmas, California gets one more rainy day Friday before a sunny, mild weekend brings relief statewide.

The California Highway Patrol reported a seemingly weather-related crash south of Sacramento in which a Sacramento sheriff’s deputy died. James Caravallo, who was with the agency for 19 years, was apparently traveling at an unsafe speed, lost control on a wet road and crashed into a power pole, CHP Officer Michael Harper said via email.

A final round of heavy rain is drenching California Friday and threatening to bring more flooding and debris flows after a days-long deadly siege of storms.

A sweeping flood watch stretching more than 800 miles along California’s coast and interior plains is in effect this week atmospheric rivers move through.

A powerful Christmas storm is dumping rain across Southern California, putting at-risk communities on alert and prompting evacuation warnings.