King tides flooded streets, homes and businesses in coastal communities across California, Florida and the Carolinas, with some flooding expected to continue into the weekend. Flood warnings covered much of Florida’s Atlantic coast through early Friday, and streets flooded in Charleston and Myrtle Beach, South Carolina.

The flooding spanned both U.S. coasts as repeated high tides combined with local weather and ocean conditions.

The tides began around the full moon. High pressure north of Florida and low pressure over the Caribbean boosted swells, while a super El Niño and Kelvin waves raised sea levels along California’s coast.

Near Miami, Virginia Key recorded its highest king tide and third-highest water level in roughly 30 years of records; only hurricanes had produced higher levels. Flooded streets also complicated access to Fort Lauderdale’s in-water boat show.

In Huntington Beach, California, residents used sandbags to protect homes and paddleboards or surfboards to move through floodwaters, while sections of Pacific Coast Highway were closed. Tides in Orange and San Diego counties were expected to approach records.

Northern California faced minor flooding in low-lying coastal areas through Saturday, with peak tides about 1.9 feet above normal; flooding generally occurred within 90 minutes of high tide.

Dangerous surf and rip currents were forecast to persist through the weekend, prompting warnings to stay away from beaches and the water.