The anticipated rain could disrupt Halloween activities across Los Angeles, with the potential for moderate to heavy rainfall. Coastal areas in Los Angeles, Orange, and San Diego counties are at risk of localized flooding, coastal erosion, and structural damage due to high tides. Roads may be closed, and low-lying properties, including homes and businesses, could face inundation. The Long Beach Peninsula and parts of Orange County, already affected by recent storms, are particularly vulnerable. Residents in these areas are advised to remain vigilant and take precautions to protect life and property.