San Clemente, a small coastal town at the southern end of Orange County, is navigating a challenging period marked by significant environmental threats. For months, the city has experienced widespread coastal erosion driven by El Niño-related Pacific storms, which has impacted a crucial rail line and reshaped its beaches. This was compounded by a fire that ignited in the city’s bushy foothills on a Friday, quickly advancing toward hillside neighborhoods and destroying homes in nearby San Juan Capistrano.
The convergence of these dangers highlights what more of California may face this winter, as Southern California enters its traditional fire season and forecasters predict increased coastal flooding and erosion from what is anticipated to be a severe El Niño winter. Cameron Cosgrove, a 14-year San Clemente resident and planning commissioner, expressed the gravity of the situation, stating, "We're in a crisis." He noted the eroding beaches and high wildfire risk, especially during Santa Ana wind conditions, calling them "scary times" that demand a response.
By the following Monday, firefighters were working to clear fire retardant from streets and finalize containment lines around the charred hills between San Clemente and San Juan Capistrano. The smell of smoke lingered in the air. Resident Rebecca Schwarz, surveying the damage from the Norte fire, lamented that the community "lost our beaches and our trails within two weeks." The blaze, fanned by strong Santa Ana winds, burned 570 acres and destroyed at least six homes in San Juan Capistrano. While many residents in the rugged, shrubby hills had prepared for such an event, few anticipated it that Friday, especially after Tropical Storm Rachel had dumped rain on the region just days prior, though not enough to adequately moisten the dry vegetation. Todd Schwarz, another resident, recalled the windy conditions but also the presence of mountain bikers and runners on the trails that morning.
Before the fire erupted, much of the city's attention was fixed on the coast as residents braced for El Niño's impact, following an active hurricane season that had already dramatically reshaped beaches in San Clemente and Capistrano Beach. The National Oceanic and Atmospheric Administration’s Climate Prediction Center indicates a nearly 100% chance of a "very strong" El Niño this season, with an 83% chance it could be the strongest on record since 1950.
Following the fire, a new concern has emerged: mudslides. Burned roots that held soil in place, combined with searing flames that limit the dirt's ability to absorb water, create this risk. Some neighborhood houses already had sandbags on their porches. Suj Naran, a resident of about 10 years, voiced concern, asking if mudslides would now be a worry with El Niño hitting. Even without torrential rain, El Niño winters generally bring stronger waves, leading to greater sand loss and erosion.
Along San Clemente’s 4.7 miles of shoreline, coastal erosion has been a persistent and costly issue. It has also impacted one of California’s busiest rail corridors, used by Pacific Surfliner and Metrolink commuters, as well as freight operations. In January 2024, a landslide at Mariposa Point sent soil and debris onto the tracks, destroying a pedestrian bridge and beach trail and temporarily halting rail service. The Orange County Transportation Authority and Metrolink constructed a 200-foot wall to restore service and enhance protection. High tides over the summer also led to train cancellations and emergency rail line repairs. The transportation authority is nearing completion of a study evaluating strategies to protect seven miles of railroad through Dana Point and San Clemente for the next 30 years.
The effects of coastal erosion are most visible at the beach, where high tides and large surf have covered entire sections, cutting off access. In 2024, the city added approximately 200,000 cubic yards of sand near the pier and 37,000 cubic yards at North Beach. This initial effort, part of a decades-long restoration plan, successfully widened the beach and protected infrastructure, including the city’s marine safety headquarters, but represented only a fraction of the long-term need, according to the city’s coastal strategic plan. Coastal engineers estimate millions of cubic yards of sand will be required to fully replenish the city’s coastline, and funding for such projects remains an "unanswered question" for a small city, officials said. Mayor Rick Loeffler noted that San Clemente lacks the "revenue-generating entities" of other cities, such as car dealerships, Costcos, or large hotels. The multimillion-dollar replenishment project in 2024 was jointly funded by the federal government, the city, and the state, which covered a portion of San Clemente’s costs.
Next month, residents will vote on a ballot measure to approve a 1% sales tax increase for 10 years. These funds would support sand replenishment, beach erosion control, and fire protection services. A similar measure in 2024, which focused solely on sand replenishment, failed to achieve the two-thirds majority required for passage. Mayor Loeffler commented on the upcoming vote, suggesting the recent fire provides timely context, reminding people that the fire situation could be more severe than sand replenishment if a major fire occurs in the canyon. According to the California Department of Forestry and Fire Protection, many of San Clemente’s hillside communities, particularly those past the 5 Freeway, are categorized as high or very high fire hazard zones. The city has already deployed goats to manage invasive brush, but Cosgrove, who wrote Measure M, indicated that further efforts are necessary. The ballot measure would fund staging air assets and firefighters during high-wind events for rapid fire suppression, and the removal of highly flammable nonnative vegetation from about 5,000 acres of open space, replacing them with native plants.
