The anticipated El Niño winter could bring heavy rainfall and storms, increasing the risk of flooding and landslides across California. Urban areas may experience waterlogging, while rural regions could face soil erosion and infrastructure damage. Abandoned mines, of which there are over 47,000 in the state, may exacerbate hazards, particularly in areas prone to runoff. Residents should be vigilant, especially in flood-prone zones, and prepare for potential disruptions to daily life.