# El Niño Triggers Coastal Flooding and Infrastructure Risks in California Rising sea levels and El Niño patterns threaten California's coastal infrastructure and electric vehicles. - **Source:** [Gizmodo](https://gizmodo.com/) - **Published:** 2026-10-29 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/b6ce039c-18f5-4f06-b0dd-2caea65b049b ## Immediate Coastal Flooding Impacts High tide floodwaters recently transformed Marin County’s Shoreline Highway into two-foot-deep pools. This event, occurring just north of San Francisco, serves as a haunting preview of anticipated seasonal havoc. Local news outlets captured footage of commuters navigating flooded roads, while record-breaking October tide levels signal persistent hazards throughout the Bay Area. ## Economic Risks to Infrastructure Landscape ecologist Fraser Shilling estimates that potential levee breaches along California State Route 37 could cause recurring economic damages of $1.5 million per day. His research identifies six critical regions at risk, including San Francisco International Airport and stretches of U.S. Route 101, highlighting the vulnerability of essential state transportation networks. ## Electric Vehicle Battery Hazards Fire department consultant Patrick Durham warns that saltwater exposure poses severe risks to lithium-ion batteries. Submersion in salt water can short-circuit cells, potentially triggering self-sustaining thermal runaway fires. This danger extends beyond electric vehicles to smaller devices like cordless power tools, creating significant safety concerns for residents in low-lying coastal neighborhoods. ## Lunar Cycles and Tide Gauges The recent flooding was driven by routine lunar spring tides, which reached approximately one foot above normal levels. Oceanographer Sean Vitousek notes that these predictable cycles are merely a baseline. Future storm surges, when combined with the year’s highest king tides, are expected to produce significantly worse impacts across the California coastline. ## El Niño Winter Forecasts Historic El Niño conditions are expected to drive storm events that could reach two to three feet above current levels. These once-in-a-century storms threaten to exacerbate existing vulnerabilities. Scientists emphasize that the combination of large wave events and high tides will likely result in catastrophic damage to various coastal towns this winter. ## Government Response and Inaction Fraser Shilling argues that the current crisis has been worsened by a lack of significant state and federal government response. While city officials in Newport Beach are distributing free sandbags, experts warn that without broader infrastructure interventions, catastrophic flooding will continue to unfold across the state’s most exposed coastal and low-lying areas. ## Corrosive Effects of Saltwater Beyond immediate fire risks, saltwater exposure causes unique corrosive damage to battery compartments. Patrick Durham highlights that EV owners often underestimate how ocean water degrades protective seals. Once submerged in salt water, the structural integrity of these battery systems is compromised, making them hazardous even after the floodwaters have eventually receded. ## Long-term Climate Adaptation Needs The intersection of rising Pacific temperatures and lunar cycles necessitates urgent adaptation strategies. With sea levels already rising by 1.3 feet due to thermal expansion, California faces a new reality. Protecting critical infrastructure like airports and highways requires addressing these climate-driven hazards before the most intense winter storms arrive later this year. ## Sources covering this story - https://gizmodo.com/el-nino-is-already-flooding-californias-coasts-and-the-years-highest-tides-havent-arrived-2000832574 — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._