The Super El Niño poses significant risks to California's coastal communities and infrastructure. Coastal flooding is almost guaranteed, threatening an additional 170,000 people and $60 billion in property compared to non-El Niño years. Towering waves and rising sea levels could erode fragile coastlines and disrupt transportation routes. Heavy rains and mountain snows may lead to flooding, mudslides, and landslides, particularly in areas with steep terrain. While the exact storm tracks are uncertain, the potential for widespread damage is high, especially in Southern and Central California.