Climate1 min read

El Niño Is Flooding California's Coasts with the Highest Tides to Come

By · Published by Everything Blog

In short

Recent high tides submerged transit arteries between San Pablo Bay and Monterey, offering an early glimpse of broader disruptions anticipated as winter ocean waters expand. UC Davis researchers warn that prolonged closures along corridors like State Route 37 could generate $1.5 million in daily economic losses while threatening facilities such as San Francisco International Airport. Fire personnel are simultaneously warning drivers that floodwaters present unique chemical dangers. Saltwater immersion corrodes electric vehicle battery packs, raising the risk of severe thermal runaway fires.

Key points

  • The initial wave of coastal flooding occurred during routine spring tides rather than lar…: The initial wave of coastal flooding occurred during routine spring tides rather than large winter storms or king tides.
  • Critical regional transit hubs including San Francisco International Airport and U.S. Rou…: Critical regional transit hubs including San Francisco International Airport and U.S. Route 101 face significant winter flood risks.
  • Municipalities as far south as Newport Beach have initiated sandbag distributions to coun…: Municipalities as far south as Newport Beach have initiated sandbag distributions to counter anticipated fall and winter surges.

Sources checked by our analysis pipeline: 1

It only took half an hour. High tide floodwaters transformed stretches of dry asphalt along Marin County’s Shoreline Highway just north of San Francisco into two-foot-deep tide pools this Tuesday—coastal hazards that the National Weather Service warns will persist across the Bay Area this month into Halloween.

In a genuinely haunting preview of the havoc that warm expanding water from El Niño’s Kelvin waves is predicted to wreak during the weeks of America’s Thanksgiving and Christmas holidays, Northern California is now coping with tidal flooding from San Pablo Bay down to Monterey. San Francisco’s NPR station KQED and other local news affiliates have published drone footage of paddleboarders and kayakers navigating commuter roads beneath Highway 101 in Sausalito, but the scope of the problem has been less cute elsewhere. High tide in the Bay Area this Monday cleared its record for the highest ever recorded in the month of October.

Motorists have found themselves trapped in low-lying coastal neighborhoods. Coastal fire departments are warning that California’s quintessential electric vehicles are at risk of runaway battery fires if saltwater short-circuits their…

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