The Bay Area faces heightened risks of flooding, coastal erosion, and infrastructure strain due to the anticipated El Niño. Vulnerable areas, including low-lying neighborhoods and regions near the coast, are particularly at risk. The combination of higher sea levels, king tides, and potential storms could lead to significant coastal flooding. Additionally, the marine ecosystem may experience disruptions, affecting species like seabirds and marine mammals. Residents are urged to prepare for possible evacuations and infrastructure challenges.