* WHAT. North-northeast winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Chesapeake Bay north of Sandy Point MD, and Chester River to Queenstown MD. * WHEN. Until 9 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. North-northeast winds around 10 kt with gusts up to 20 kt expected. * WHERE. Tidal Potomac from Indian Head to Cobb Island MD. * WHEN. From midnight tonight to 9 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

A brief period of gusty north-northeast winds is possible between roughly 2 and 4 AM overnight over the upper tidal Potomac River. Gusts of 15 to 20 knots are possible. Mariners, especially those who are inexperienced or operating smaller vessels, should exercise extra caution if navigating the waters during this time.

* WHAT. North-northeast winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Tidal Potomac from Indian Head to Cobb Island MD. * WHEN. Until 9 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. North-northeast winds 10 to 15 kt with gusts up to 25 kt. * WHERE. Chesapeake Bay north of Sandy Point MD, and Chester River to Queenstown MD. * WHEN. Until 9 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. One to two feet of inundation above ground level possible in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. From late Thursday night through Friday morning, especially around the time of high tide. High tide at Annapolis U.S. Naval Academy is at 7:42 AM Friday morning. * IMPACTS. At 3.2 feet, water begins to approach businesses on Dock Street in Annapolis. The City Dock parking lot is flooded. Compromise Street is flooded. * ADDITIONAL DETAILS. Tides one to two feet above normal. There is uncertainty in how much water levels increase through Friday.