* WHAT. For the first Small Craft Advisory, west winds 5 to 15 kt and a moderate chop expected. For the second Small Craft Advisory, west winds 5 to 15 kt and choppy waters expected. * WHERE. San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN. For the first Small Craft Advisory, until 9 PM PDT this evening. For the second Small Craft Advisory, from 3 PM to 9 PM PDT Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Large breaking waves of 12 to 16 ft, locally higher at steep-sloped beaches with breaking wave heights of 15 to 20 ft. * WHERE. San Francisco, Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN. Until 11 PM PDT this evening. * IMPACTS. Dangerous swimming and surfing conditions and localized beach erosion. * ADDITIONAL DETAILS. Large waves will peak during the day today, then diminish into Wednesday. Northwest facing beaches are most at risk for large turbulent shore break and strong currents.