A powerful winter storm is set to hit much of the U.S. West Coast around Christmas Eve, bringing “heavy rainfall, strong winds, and challenging travel conditions.” The entire California coastline is under heightened alerts as moisture-rich storm bands move inland. Cities like San Francisco and Los Angeles could see several inches of rain, while Northern California may experience wind gusts “approaching levels typically associated with very strong coastal storms.” Officials urge residents and travelers to stay informed and prepare for changing conditions.

Meteorologists say the storm is fueled by an atmospheric river, “a long and narrow stream of moisture that transports large amounts of water vapor.” This is the second such event in a week, raising concerns about flooding and ground saturation. Inland and mountainous areas, particularly the Sierra Nevada and Transverse ranges, may see even higher rainfall. The National Weather Service has issued winter storm warnings, noting that “heavy snow at higher elevations could make travel hazardous and increase the risk of road closures.”

Snowfall could be significant, with “several feet of snow” expected in higher elevations and even greater totals along ridges and peaks. These conditions may cause power disruptions, travel difficulties, and airport delays, affecting holiday travel nationwide.

The storm also poses safety risks. Strong winds between 40 and 60 mph could down trees and power lines, while heavy rain raises the risk of flooding and landslides, especially in areas recently affected by wildfires. Experts warn that even if the storm isn’t technically a rapidly intensifying system, “its impacts could still be significant.”

Authorities emphasize preparedness: avoid unnecessary travel, secure outdoor items, and follow local emergency guidance. Staying informed and cautious is crucial as the storm progresses.