High tides caused by the gravitational alignment of the Earth, moon, and sun inundated coastal areas in California, Florida, and the Carolinas this week. The event, known as king tides, flooded streets and sent seawater into homes and businesses in several beach communities on both U.S. coasts.
The tides began with a full moon earlier in the week and were expected to continue causing flooding through the weekend. Meteorologists noted that this year's king tides were intensified by specific regional conditions, including atmospheric pressure systems in the Atlantic and elevated sea levels in the Pacific linked to the ongoing super El Niño.
In Huntington Beach, California, officials closed portions of the Pacific Coast Highway as water reached knee-deep levels. Record high tides were set in San Diego, San Pedro, and Santa Barbara. In Florida, Virginia Key recorded its highest king tide and third-highest water level on record, surpassed only by levels seen during hurricanes. Streets in Fort Lauderdale and marinas hosting a large in-water boat show were also affected by standing water.
Weather service officials reported that flooding typically occurred within 90 minutes of peak high tides. In Northern California, high tides reached 1.9 feet above normal levels. Residents in Sunset Beach, California, reported using multiple layers of sandbags to protect properties, while crews in Long Beach used pipelines to pump sand back onto shorelines to reinforce barriers against the rising water.
The scale of the event is marked by record-breaking water levels and geographic breadth. In Northern California, tides peaked 1.9 feet (about a half-meter) above normal. In Miami's Virginia Key, officials recorded the highest king tide in three decades of record-keeping. The flooding led to the closure of a four-lane highway in California and prompted flood warnings for most of Florida’s Atlantic coast through Friday, October 30, 2026. Residents in affected areas experienced water entering homes for the first time in decades, with one Sunset Beach resident reporting flooding for three consecutive days.
The concrete day-to-day change for individuals includes road closures, property damage from seawater, and restricted access to beaches due to high surf and rip currents. These conditions are expected to persist through at least Sunday, November 1, 2026. The event demonstrates the compounding effect of seasonal tides and larger climate patterns like El Niño. Next steps for these communities include monitoring tide tables through the weekend and ongoing shoreline reinforcement efforts, such as the sand-pumping operations observed in Long Beach.