MARINE CONDITIONS · SAN FRANCISCO BAY, CALIFORNIA
Check San Francisco Bay Marine Conditions
Start with the NWS San Francisco Bay marine zones, then check active warnings, buoy observations and NOAA tides before leaving the dock.
A forecast zone can cover conditions unlike a protected marina. Buoys are point observations, and neither source replaces Coast Guard restrictions or local harbor instructions.
ONE-MINUTE CHECK
Use the sources in the right order
- Choose the bay or coastal zone that matches the actual route.
- Read the issuance time and active Small Craft, Gale or Storm warnings.
- Check nearby buoy wind, wave and pressure observations.
- Check tides and currents separately for harbor and channel timing.
WHY THIS GUIDE HELPS
Match the source to the question
Start with the NWS San Francisco Bay marine zones, then check active warnings, buoy observations and NOAA tides before leaving the dock.
A forecast zone can cover conditions unlike a protected marina. Buoys are point observations, and neither source replaces Coast Guard restrictions or local harbor instructions.
COMMON QUESTIONS
Before opening the source
Does this page show live conditions?
No. One Minute Updates explains which official source to open and how to interpret it.
Why should I check more than one source?
A forecast zone can cover conditions unlike a protected marina. Buoys are point observations, and neither source replaces Coast Guard restrictions or local harbor instructions.
How current is the information?
Check the timestamp displayed by each official source. Conditions can change after any observation or report.