* WHAT. For the first Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and choppy waters expected. For the second Small Craft Advisory, west winds 15 to 20 kt with gusts up to 30 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, from 3 PM this afternoon to 9 PM PDT this evening. For the second Small Craft Advisory, from 3 PM to 9 PM PDT Friday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the first Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and choppy waters expected. For the second Small Craft Advisory, west winds 15 to 20 kt with gusts up to 30 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, from 3 PM this afternoon to 9 PM PDT this evening. For the second Small Craft Advisory, from 3 PM to 9 PM PDT Friday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the first Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and choppy waters expected. For the second Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 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 Friday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the first Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and choppy waters expected. For the second Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 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 Friday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. West winds 10 to 20 kt with gusts up to 30 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. From 9 AM Friday to 3 AM PDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Southwest winds 10 to 20 kt with gusts up to 30 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. From 9 AM this morning to 9 AM PDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. The South Coast AQMD has issued an air quality alert due to harmful levels of fine particle pollution. * WHERE. Smoke from Independence Day Fireworks in Orange County and the Inland Empire, and wildfire smoke in the San Bernardino Mountains. Levels of particle pollution can vary by time and location depending on emissions and local weather conditions. * WHEN. Smoke from Fireworks from 5 PM July 4th through 11:59 PM July 5th, and wildfire smoke from midnight Thursday to 10 PM Friday. * IMPACTS. Particle pollution can get deep into the lungs and cause serious health problems such as heart attacks, bronchitis, asthma attacks, and difficulty breathing. Everyone can be affected, but sensitive groups such as people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.

* WHAT. The South Coast AQMD has issued an air quality alert due to harmful levels of fine particle pollution. * WHERE. Orange County and the Inland Empire. Levels of particle pollution can vary by time and location depending on emissions and local weather conditions. * WHEN. 5 PM July 4th through 11:59 PM July 5th. * IMPACTS. Particle pollution can get deep into the lungs and cause serious health problems such as heart attacks, bronchitis, asthma attacks, and difficulty breathing. Everyone can be affected, but sensitive groups such as people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk.