* WHAT...For the first Small Craft Advisory, northwest winds 15 to 25 kt. For the second Small Craft Advisory, northwest winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 11 ft expected. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...For the first Small Craft Advisory, until 3 AM PDT Thursday. For the second Small Craft Advisory, from 3 AM Friday to 3 PM PDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.