* WHAT. Southwest winds around 10 kt with gusts up to 20 kt. * WHERE. Tidal Potomac from Indian Head to Cobb Island MD. * WHEN. Until 11 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. South winds 10 to 15 kt with gusts up to 25 kt expected. * WHERE. Chesapeake Bay from Pooles Island to Sandy Point MD and Chester River to Queenstown MD. * WHEN. From 11 AM this morning to 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Southwest winds 10 to 15 kt with gusts up to 25 kt. * WHERE. Chesapeake Bay north of Pooles Island MD, Tidal Potomac from Key Bridge to Indian Head MD and Patapsco River including Baltimore Harbor. * WHEN. From 11 AM this morning to 11 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. South winds 10 to 15 kt with gusts up to 25 kt expected. * WHERE. Chesapeake Bay from Pooles Island to Sandy Point MD and Chester River to Queenstown MD. * WHEN. From 11 AM this morning to 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Southwest winds around 10 kt with gusts up to 20 kt. * WHERE. Tidal Potomac from Indian Head to Cobb Island MD. * WHEN. Until 11 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Southwest winds 10 to 15 kt with gusts up to 25 kt. * WHERE. Chesapeake Bay north of Pooles Island MD, Tidal Potomac from Key Bridge to Indian Head MD and Patapsco River including Baltimore Harbor. * WHEN. From 11 AM this morning to 11 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. The District of Columbia, and portions of Maryland, including the following areas, Anne Arundel, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Prince Georges, Southeast Harford and Southern Baltimore, and portions of northern Virginia, including the following areas, Arlington/Falls Church/Alexandria and Fairfax. * WHEN. From 3 PM this afternoon to 10 PM EDT this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - Multiple rounds of showers and thunderstorms are possible from mid afternoon through late evening. Given the humid environment, thunderstorms may be capable of producing 2 inches of rain in an hour, with isolated localized totals of around 5 inches possible in areas where multiple thunderstorms occur. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.