* WHAT. Southwest winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Sandy Point MD to Drum Point MD, Tidal Potomac from Cobb Island MD to Smith Point VA, Eastern Bay, and Choptank River to Cambridge MD and the Little Choptank River. * WHEN. From 2 AM to noon EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

A warm front accompanied by showers and a few thunderstorms will result in a brief period of wind gusts of 20 to 25 knots. Mariners should exercise extra caution if navigating the waters during this time.

* WHAT. Southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft expected. * WHERE. Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm, Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm and Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm. * WHEN. From 11 AM Thursday to 2 AM EDT Friday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Southwest winds 15 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft expected. * WHERE. Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm and Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm. * WHEN. From 11 AM to 6 PM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. Dorchester, Wicomico and Somerset Counties. * WHEN. From 10 PM this evening to 7 AM EDT Thursday. * IMPACTS. Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

* WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of DC, including the following , District of Columbia, Maryland, including the following areas, Anne Arundel, Central and Southeast Howard, Central and Southeast Montgomery, Northwest Howard, Northwest Montgomery, Prince Georges and Southern Baltimore, and northern Virginia, including the following areas, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Eastern Loudoun, Fairfax and Northwest Prince William. * WHEN. Until 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. Low-water crossings may be flooded. * ADDITIONAL DETAILS. - Multiple rounds of heavy showers and thunderstorms will move across the area today into this evening. Rainfall amounts of 1 to 2 inches are likely, with isolated amounts of 3 to 4 inches possible. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information

* WHAT. One and a half to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. In Delaware, New Castle. In New Jersey, Salem. * WHEN. From 9 PM to 11 PM EDT this evening. * IMPACTS. Flooding of lots, parks, and roads with only isolated road closures expected.

* WHAT. From one to one and a half feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. In Delaware, Kent, Inland Sussex and Delaware Beaches. In New Jersey, Cumberland, Atlantic, Cape May, Atlantic Coastal Cape May and Coastal Atlantic. * WHEN. From 7 PM this evening to 1 AM EDT Thursday. * IMPACTS. At this level, flooding begins on the most vulnerable roads in coastal and bayside communities, and along inland tidal waterways. Some partial or full road closures are possible.

* WHAT. Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE. In New Jersey, Mercer, Gloucester, Camden and Northwestern Burlington. In Pennsylvania, Delaware, Philadelphia and Lower Bucks. * WHEN. From midnight tonight to 5 AM EDT Thursday. * IMPACTS. At this level, flooding begins on the most vulnerable roads along tidal waterways. Some partial or full road closures are possible.