El Niño's Impact on Private Flood Insurance: Rates and Risks
According to recent data from the National Association of Insurance Commissioners (NAIC), private flood insurance premiums fell from $803 million in 2023 to $730 million in 2024. This decline coincides with NOAA's confirmation of El Niño conditions, expected to intensify through 2026. El Niño's presence is known to elevate flood risks, particularly in California and Arizona, resulting in reduced uptake of private flood insurance. This discrepancy in coverage presents brokers with significant considerations regarding El Niño's potential impact.
NOAA Administrator Neil Jacobs reported a 98% likelihood of El Niño this summer, with an 80% chance of it reaching moderate strength. The effects vary by region; California faces increased risk from atmospheric river events, particularly in the south, whereas Arizona may encounter a wetter winter season. Conversely, El Niño could reduce instances of hail, tornadoes, and damaging winds in Texas and Oklahoma, though these threats persist nonetheless.
El Niño is also expected to decrease Atlantic hurricane activity by enhancing vertical wind shear. Despite this, NOAA forecasts a 55% probability of a below-normal Atlantic hurricane season but a 70% chance of an above-normal season in the eastern Pacific, heightening risks along the West Coast. Kristen Corbosiero, an atmospheric scientist at the University at Albany, cautions that a quieter Atlantic season does not preclude significant impacts on the U.S. mainland or Hawaii.
Primary insurance carriers enforce strict policies on wind and named-storm deductibles in coastal high-risk zones. Danny Stock, head of property at Allianz Commercial, emphasizes that climate change exacerbates storm intensity regardless of frequency. Observations from 2025's Hurricane Melissa, known for its rapid intensification and substantial economic impact, reflect this trend. Reinsurers are demanding higher attachment points and pricing adjustments for lower coverage layers, which results in reduced capacity for primary brokers, contrary to seasonal trends. A major weather incident in a vulnerable area could lead to billions in insured damages.
Steve Bennett, leader in climate science and catastrophe modeling at Mercury Insurance, stresses the importance of a nuanced approach to El Niño. "El Niño influences probabilities, not certainties. It is an important signal, but it is only one piece of a much larger weather puzzle," he stated.
The Insurance Information Institute's data reveals that while 22% of homeowners recognize flood risks, only 78% of them carry flood insurance. The decrease in private flood premiums from 2023 to 2024 suggests a misalignment between insurance coverage and rising exposure. The emergence of El Niño provides brokers with an opportunity to proactively address potential coverage gaps with clients before seasonal risks materialize.