Full Breakdown
Southern California Braces After Tropical Storm Rachel’s Coastal Impacts
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Storm Aftermath Across the Region
Remnants of Tropical Storm Rachel swept through Southern California, delivering heavy rain, flooding and debris flows that damaged homes on the Long Beach Peninsula and eroded beach infrastructure. The storm’s surge lifted tides to roughly 7.6 feet near Long Beach on Sunday morning, prompting coastal flooding advisories that remain in effect from San Diego northward through San Luis Obispo. While the most severe high tides are expected between 10 a.m. and 11 a.m. on the coming Monday and Tuesday, secondary tides later each night are projected to be milder. The National Weather Service warned that isolated damage could still occur, especially to beach parking lots, pathways and small vessels threatened by strong rip currents and large waves. A fatality was recorded at Dockweiler Beach on Sunday morning as authorities investigate a possible drowning linked to storm conditions.
Meteorological Background
Rachel, which reached Category 3 strength over the Pacific, is only the second tropical storm for which a watch has been issued in Southern California. Climate scientist Daniel Swain of the University of California’s Agriculture and Natural Resources program linked the storm’s intensity to an unusually warm ocean surface, a condition amplified by the ongoing El Niño pattern and a preceding marine heatwave. Swain also noted that human-caused climate change likely contributed to the elevated sea temperatures that fueled the system.
Damage and Immediate Impacts
The storm’s surge stripped a segment of Long Beach’s historic boardwalk and damaged multiple residences along the peninsula. In contrast, Newport Beach officials reported that pre-emptive berm reinforcement helped the city avoid major flooding. Preliminary tide measurements and forecasted levels suggest that high-tide flooding will be limited to minor inundation, though beach erosion is expected to persist along the affected coastline.
Official Responses and Forecasts
National Weather Service forecasters projected that the worst of the storm has passed, but they kept coastal flooding advisories active through Monday in the northern counties and through Tuesday in the southern counties. Wind advisories over inland deserts are set to expire early Monday. The agency also indicated that additional isolated damage is unlikely. Local emergency crews, including Long Beach Search and Rescue volunteers, have been placing sandbags to protect vulnerable homes.
Outlook and Broader Implications
Swain warned in a recent webinar that, despite the season’s late stage, the warm ocean could allow another tropical system to affect the region into late October or early November. Beyond tropical threats, El Niño is already raising sea levels and increasing the probability of a wetter winter for California. By week’s end, the National Weather Service expects a shift to hotter, drier conditions and the first Santa Ana winds of the season, raising the risk of wildfires through the weekend.