A new round of king tides — higher-than-usual oceanic tides, caused by the moon’s alignment with the Earth — arrived Friday, coinciding with a set of storms that started to drop rain earlier in the week and won’t stop until Monday afternoon, according to the National Weather Service.

The intensity of this weekend’s storm, coupled with a king tide, caught Marin County cities like Corte Madera, Sausalito and San Rafael off guard. Floodwaters spilled over levees, covered bike trails, and surrounded homes and businesses.

The Clatsop and Tillamook Coast, and the South Washington Coast could see minor flooding during high tides in low-lying areas near bays, sloughs, and the lower stretches of coastal rivers, with water levels reaching up to one foot above ground level, the NWS said.

King tides are a natural, predictable phenomenon that lets scientists and everyday marine enthusiasts marvel at the changing seascape that is vastly different in just a few hours.

Parts of Riviera Circle were submerged under knee-deep water, making high-profile vehicles the safest way to navigate the neighborhood. Grant Grobecker, a Larkspur resident, drove through the area to check on his home and make sure his parents and two brothers were safe.

Videos posted to social media over the weekend show hundreds of people walking over tide pools and disturbing delicate marine wildlife.

Pebble Beach is looking a little worse for the wear after recent storms that have pummeled the California coast.

California coastal communities "experienced exceptionally high and record-breaking tides" over the past weekend.