* WHAT. Heat index values up to 102 expected. * WHERE. In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, Northwestern Burlington, and Salem Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN. From 10 AM to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 107 expected. * WHERE. In Delaware, Kent and Inland Sussex Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties. * WHEN. From 10 AM to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 102 expected. * WHERE. In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, Northwestern Burlington, and Salem Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN. From 10 AM to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 106 expected. * WHERE. In Delaware, Kent and Inland Sussex Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties. * WHEN. From 10 AM to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. South winds around 10 to 15 kt with gusts up to 25 kt. * WHERE. Chesapeake Bay north of North Beach MD, Chester River to Queenstown MD, and Eastern Bay. * WHEN. Until 9 AM EDT this morning. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Heat index values up to 107 expected. * WHERE. In Maryland, Cecil, St. Marys, Calvert and Southeast Harford Counties. In Virginia, Orange, Culpeper, King George and Southern Fauquier Counties. * WHEN. From noon to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. The combination of air temperatures in the 90s and high humidity will result in the potential for increased heat-related illnesses.

* WHAT. For the first Heat Advisory, heat index values between 100 to 105 expected. For the second Heat Advisory, heat index values up to 107 expected. * WHERE. Portions of central, northern and southern Maryland, The District of Columbia and central and northern Virginia. * WHEN. For the first Heat Advisory, from noon today to 8 PM EDT this evening. For the second Heat Advisory, from noon to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. The combination of air temperatures in the 90s and high humidity will result in the potential for increased heat-related illnesses, especially those partaking in outdoor Independence Day activities today.

* 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 8 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 5:00 AM.