Monday morning's high tide sent water surging from Newport Harbor into the streets of Balboa Peninsula, flooding businesses in the Balboa Fun Zone, while Long Beach residents reported flooding along Bayshore Beach, Naples and the Peninsula.

The most striking number came from the San Pedro tide gauge, which reached 8.02 feet and broke the previous record of 7.93 feet set in January 2005. The Guardian reports that preliminary observations there were the highest seen in data dating back to November 1923.

Despite the water in the streets, Newport Beach officials reported no significant widespread damage.

Three threats are stacking on Southern California's coast at once: El Niño fueling an active eastern Pacific hurricane season, a marine heat wave, and an astronomical alignment that happens only once every 20 years.

Record-hot ocean temperatures are themselves raising sea levels — the Los Angeles Times reports that warm water off California is making seawater levels 1.25 to 1.8 feet higher than the moon, Earth and sun alone would produce.

Newport Beach's city manager, Seimone Jurjis, told The Guardian that ocean levels there were running 15 to 22 inches above expectations, enough to tip water over seawalls and into streets and homes.

The gauges tell a consistent story of exceptionally high water.

In La Jolla, officials recorded sea level at 7.75 feet — very close to the station record of 7.81 feet set in November 2015 during the last very strong El Niño, and National Weather Service meteorologist Chandler Price said higher tides expected Tuesday could break it, according to the Los Angeles Times.

Newport Beach measured 8.3 feet Monday, nearly 2 feet above the high tide alone, and the city said Sunday's water already hit 8 feet. Mill Valley in the Bay Area saw cars stranded on a flooded road with paddleboarders gliding past, The Guardian reported.

The National Weather Service has issued a coastal flood warning for Orange and San Diego counties lasting through Thursday afternoon, stating that low-lying property including homes, businesses and some critical infrastructure will be inundated and some shoreline erosion will occur in morning hours.

A coastal flood advisory covers Los Angeles, Ventura, Santa Barbara and San Luis Obispo counties, where isolated damage to the most vulnerable structures is possible.

The Oxnard weather service office projects Los Angeles Harbor seawater levels could hit 8.1 feet Tuesday — above the harbor's 7.92-foot record from January 2005 — and Newport Beach could see 8.5 feet Tuesday and Wednesday mornings, per the Los Angeles Times.

This is not only a Pacific event. FOX Weather reports the Southeast coast is in the most critical phase of its fall King Tide event, with Coastal Flood Warnings across parts of South Florida, Georgia and the South Carolina Lowcountry through Tuesday.

Monday's King Tide flooding ranked among the top 5 flood events in communities including Virginia Key, Port Everglades, Port Canaveral and Lake Worth Pier, per the FOX Forecast Center.

Charleston Harbor water levels could reach or exceed 2 feet, pushing flooding beyond the waterfront into downtown streets, while heavy tropical rain adds a Level 1 of 4 flash flood threat through Tuesday.

Scientists warn the flooding will get worse before it gets better.

Even higher tides are expected around Thanksgiving, Christmas and Martin Luther King Jr. Day, when the annual king tides arrive near the peaks of the 18.6-year lunar node cycle and the 4.4-year lunar perigee cycle, according to Scripps Institution of Oceanography researcher Reinhard Flick, as reported by the Los Angeles Times.

If storms emerge during those windows, coastal flooding risk would worsen further, and a historic El Niño is expected to bring severe storms to California this winter. Residents in flood-prone areas are urged to move cars to higher ground and keep sandbags ready.