* WHAT. Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE. Shoreline in Anne Arundel County. * WHEN. From 11 PM this evening to 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. 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.

SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for. Southern Carroll County in north central Maryland. Northwestern Howard County in central Maryland. Northeastern Montgomery County in central Maryland. * Until 1015 PM EDT. * At 949 PM EDT, severe thunderstorms were located along a line extending from 9 miles southwest of Westminster to Mount Airy to Green Valley, moving east at 30 mph. HAZARD. 60 mph wind gusts. SOURCE. Radar indicated. IMPACT. Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. * Locations impacted include. Damascus, Eldersburg, Mount Airy, Sykesville, Oakland, Gamber, Finksburg, Henryton, West Friendship, Winfield, Lisbon, Glenwood, Louisville, Dayton, Gaither, Watersville, Poplar Springs, Roxbury Mills, Woodbine, and Glenelg.