* WHAT. Up to one and a half feet of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. Until 7 AM EDT this morning, especially around the time of high tide. * IMPACTS. At 2.8 feet, flooding of some of the parking area near Dock Street in Annapolis may occur, with water surrounding 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 3:35 AM and 2:45 PM.

* WHAT. Up to one and half feet of inundation above ground level in low lying areas due to tidal flooding. * WHERE. Shoreline in the District of Columbia. * WHEN. Until 8 AM EDT this morning, especially around the time of high tide. * IMPACTS. Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS. Tides one to one and a half feet above normal. The next high tide at Washington Channel is at 6:06 AM and 6:36 PM.

* 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 7 AM EDT this morning, 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 2:45 PM and 4:19 AM.

* WHAT. Heat index values up to 101 expected. * WHERE. In Maryland, Washington and Central and Eastern Allegany Counties. In West Virginia, Eastern Mineral, Berkeley, Jefferson, and Morgan Counties. * WHEN. From noon today to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 101 expected. * WHERE. A portion of central Pennsylvania. * WHEN. From noon today to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.