* WHAT...For the first Small Craft Advisory, west winds 15 to 25 kt with gusts up to 30 kt and rough waters expected. For the second Small Craft Advisory, west winds 10 to 20 kt with gusts to 25 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 AM PDT Sunday. For the second Small Craft Advisory, from 3 PM to 9 PM PDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.