Coastal flooding is disrupting parts of Northern California as exceptionally high tides push seawater beyond the shoreline and into nearby streets and waterfront areas. Sausalito and Corte Madera, both in the San Francisco Bay Area, have already experienced flooding as a result.
The phenomenon, known as King Tides, has prompted warnings from the California Governor’s Office of Emergency Services (Cal OES), which expects elevated coastal water levels to remain a concern through Friday, October 30.
Why the coastline is experiencing unusually high water levels
King Tides are exceptionally high tides that occur when the gravitational effects of the moon and sun combine to produce some of the highest sea levels of the year.
These events can expose vulnerabilities in coastal communities, particularly in low-lying neighborhoods where seawater can reach roads, walkways and properties that are normally above the waterline.
California authorities have also pointed to the potential influence of El Niño conditions on weather patterns during the season, making it important for coastal residents to remain prepared for changing conditions.
What residents and visitors should avoid
For people living near the coast or planning to visit California’s beaches, the immediate concern is not just flooding but also dangerous surf. Cal OES is urging the public to:
- Stay out of the water and keep away from areas where large waves can reach unexpectedly.
- Never drive through flooded streets, even if the water appears shallow.
- Avoid going around roadblocks or barricades placed by authorities.
- Follow local weather alerts and take precautions to protect homes, vehicles and other property near the shoreline.
Although Sausalito and Corte Madera are among the locations reporting impacts, the advisories cover multiple stretches of California’s coastline. Residents and visitors should remain cautious as the high-tide conditions continue through Friday.
