San Diego Prepares for Strong El Niño Season
San Diego Prepares for Strong El Niño Season
US · Published Oct 1, 2026
• San Diego County has issued a local emergency proclamation in anticipation of a potentially historic El Niño season, expected to bring heavy rainfall, repeated storms, and significant flooding risks this fall and winter.
• According to the National Weather Service Climate Prediction Center, there is a 90% likelihood of a strong El Niño event, driven by warmer-than-average ocean temperatures in the tropical Pacific.

Impact & Risks

The anticipated El Niño conditions could lead to severe weather impacts across San Diego County, including heavy rain, urban flooding, mudslides, and coastal erosion. These events may result in road closures, power outages, and damage to critical infrastructure. Communities in low-lying areas and those near waterways are particularly vulnerable to flooding and landslides. The strain on stormwater systems could exacerbate these risks, potentially leading to significant disruptions in daily life. Local officials have emphasized the importance of early preparation to mitigate these risks and protect lives and property.

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