An atmospheric river is set to hit California, bringing significant rainfall, strong winds, and potential flooding across various regions. Southern California, including the San Diego and Los Angeles areas, is expected to face heavy rains with predicted totals reaching up to 3 inches in some locations. Wind gusts could exceed 60 mph in the Bay Area, raising concerns about mudslides, especially in burn scar areas. The storm is anticipated to begin impacting the state midweek, with a timeline indicating heavy downpours from Thursday through Sunday. Residents are urged to prepare for possible disruptions, including flight delays and hazardous road conditions.