LOS ANGELES (AP) — Rain from a powerful winter storm that swept across Southern California has begun to taper off, but another storm system is set to arrive on Christmas Day, bringing more showers and possible thunderstorms.

Forecasters predict it could be the wettest Christmas in years for the region, warning of potential flash flooding and mudslides. Areas affected by previously devastating wildfires have already seen evacuation warnings activated as heavy rains threaten to cause mudslides and debris flows.

Rescue efforts were underway in San Bernardino County, where firefighters worked to assist residents trapped in their vehicles as mud and debris blocked access roads. Authorities issued a shelter-in-place order in affected areas, particularly in places like Lytle Creek, where residents faced multiple challenges due to blocked routes.

As community members come together to help one another, there is growing concern over the approaching storm, with predictions suggesting Southern California could receive 4 to 8 inches of rain this week. Governor Gavin Newsom has declared a state of emergency in six counties to ensure statewide assistance.

Residents across burn scar zones faced evacuation orders, while coastal areas, including Malibu, experienced flood warnings. The storms are a result of multiple atmospheric rivers transporting moisture from the tropics, exacerbating travel difficulties during this busy holiday season.

With additional snow forecasts for higher elevations, the risk of avalanches and road closures looms, highlighting the need for safety precautions as the holiday weekend approaches. This situation serves as a reminder of nature's power and the importance of community support in times of crisis.