A Coastal Flood Advisory is in effect for Northern California, particularly around the San Francisco Bay and North Bay, starting Sunday evening (June 22) and lasting through Monday. High tides could push water onto nearby beaches and flood low-lying roads, parks, and trails, but significant damage isn’t expected. Boaters and small vessels should use caution due to rough seas and gale-force winds. Staying updated with local tide charts and avoiding waterfront areas during peak tides can help keep you safe.
Advisory Overview
What it is: Minor coastal flooding expected—lo-cal nuisance-level water over roads, beaches, and trails.
When: From 6 p.m. Sunday through midnight‑ish Monday, covering two consecutive nights.
Where: Affected areas include the San Francisco shoreline, North Bay interior valleys, and nearby coastal counties
Expected Impacts
Roads, parking lots, and trails near water may experience shallow flooding, especially during peak tides.
Some low-lying streets may close intermittently.
Coastal businesses and parks should prepare for nuisance—but not destructive—flooding.
Marine Conditions & Boaters Alert
Small Craft Advisories remain in force across Bay waters until early Sunday, and likely again during the advisory period.
Gale Warnings with gusts up to 40 kt are active through Sunday morning and may linger into Monday.
Mariners and beachgoers: expect rough seas and strong winds—exercise caution
Safety Tips & Preparedness
Drivers/pedestrians: Don’t drive through flooded roads or bypass barricades; avoid low‑lying coastal paths.
Property owners: Secure outdoor items, sandbag vulnerable areas if possible, and note local high‑tide schedules.
Boaters: Check updated marine forecasts and consider delaying outings until seas calm.
Why It Happens
High astronomical tides, combined with onshore winds and swell, are pushing water over shorelines at night.
Typical of coastal flood advisories, it’s more of a nuisance event, not a dangerous flood
Watch Updates
The advisory may be extended or lifted based on tide and weather changes.
National Weather Service local offices (e.g. Eureka, Sacramento, Bay Area) and media outlets (Fresno Bee, ABC7) are the best sources for timely updates.
