The strongest El Niño event could lead to significant flooding risks in Southern California, particularly in areas near rivers, creeks, and coastal zones. Elevated sea levels and extreme weather patterns may exacerbate the impact of back-to-back severe storms. Residents in flood-prone areas should be especially vigilant, as the combination of El Niño and global warming could result in unprecedented weather conditions. Coastal communities and infrastructure may face heightened risks due to rising sea levels and increased storm intensity.