Patchy dense marine fog with visibility less than one nautical mile is possible this morning on the Potomac River from Potomac Creek to Smith Point, Patuxent River, and interior waterways along the Maryland Eastern Shore. The fog will gradually improve after sunrise. Mariners navigating these waters should exercise caution and follow USCG Rule of Conduct of vessels in restricted visibility.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay north of North Beach MD, Chester River to Queenstown MD, and Eastern Bay. * WHEN. From 10 AM this morning to 4 PM EST Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the first Small Craft Advisory, south winds around 10 kt with gusts up to 20 kt expected. For the second Small Craft Advisory, southwest winds around 10 kt with gusts up to 20 kt expected. * WHERE. Tidal Potomac River from Key Bridge to Cobb Island MD, and Patapsco River including Baltimore Harbor. * WHEN. For the first Small Craft Advisory, from 10 AM this morning to 6 PM EST this evening. For the second Small Craft Advisory, from 8 AM to 4 PM EST Wednesday. * IMPACTS. Conditions will be hazardous to small craft.