* WHAT. Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. Until 4 AM EDT Sunday, especially around the time of high tide. * IMPACTS. At 2.6 feet, water may begin to pond in the parking lot at Annapolis City Dock, and surround the Alex Haley Memorial. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 1:15 AM.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Chesapeake Bay north of Drum Point MD, Chester River to Queenstown MD, Eastern Bay, and Choptank River to Cambridge MD and the Little Choptank River. * WHEN. Until 6 AM EDT early this morning. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Heat index values up to 103 expected. * WHERE. Portions of northern Delaware, central and southern New Jersey, and southeast Pennsylvania. * WHEN. From 11 AM to 7 PM EDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 107 expected. * WHERE. Caroline, Kent MD, Queen Annes, and Talbot Counties. * WHEN. From 10 AM to 7 PM EDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.