Los Angeles faces an unusual holiday threat as NOAA warns of flooding without storms

• NOAA warns of an unprecedented surge in Los Angeles flooding during the upcoming Thanksgiving and Christmas holiday season.
• City tide gauge records reached 12 days of overflows, surpassing the historic 1983 mark without even counting October data yet.
• Scientists attribute this sunny day flooding phenomenon to a combination of King Tides, marine heatwaves and the Kelvin wave.

NOAA’s severe warning regarding rising coastal sea levels

The National Oceanic and Atmospheric Administration NOAA issued a decisive warning call upon confirming that the coastal area will face record Los Angeles flooding during the festive weeks of Thanksgiving and Christmas. According to details provided by expert oceanographer Karen Kavanaugh, the tide gauge infrastructure operating since 1923 has already logged 12 full days exceeding coastal safety thresholds, shattering the previous record established in 1983 without having processed October figures yet.

For this reason, the agency advised local communities to immediately move vehicles parked in low-lying areas to protect them against saltwater corrosion, in addition to acquiring sandbags to keep installed for several consecutive weeks while closely monitoring reports issued by the National Weather Service across the state of California.

The four climate factors triggering this historic Pacific phenomenon

Likewise, the severity of this outlook in California does not stem from traditional winter storms or tropical cyclones, but rather from a strange event dubbed sunny day flooding that directly affects the Los Angeles region. In this sense, research conducted by marine scientists determined that the tidal surge responds to the simultaneous alignment of King Tides generated by lunar proximity, an intense oceanic heatwave expanding the sea surface thermally and the gradual arrival of the Kelvin wave pushed by El Niño. Apparently, this complex combination of natural elements elevates the water mass between 15 and 30 centimeters above typical averages, which coupled with global sea-level rise recorded over recent decades creates a persistent threat that also hits neighboring localities like San Diego, Santa Barbara, and Santa Monica, resulting in widespread Los Angeles flooding.

Contingency plans and preventive measures to protect the community during the holidays

Facing the impending end-of-year family celebrations such as Thanksgiving and Christmas, state authorities and NOAA emphasize that the population must prepare well in advance to mitigate the damage from record Los Angeles flooding. Similarly, government officials remind residents that although predicting days with the highest tides of the year remains possible, any unpredictable atmospheric disturbance can dramatically exacerbate seawater intrusion into urban neighborhoods. Consequently, keeping citizens informed through official channels and designing preventive evacuation plans proves essential to safeguarding homes, turning continuous ocean monitoring into a strategic priority for the coastal economy and the well-being of California residents throughout this year-end period

 

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Una publicación compartida de Adam Krueger (@weatheradam)