* WHAT. Dangerously hot conditions with heat index values around 110 expected. * WHERE. Portions of northeast North Carolina and central, east central, eastern, north central, south central, and southeast Virginia. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 111. For the Heat Advisory, heat index values up to 108 expected. * WHERE. Portions of northeast North Carolina and central, east central, eastern, north central, south central, and southeast Virginia. * WHEN. For the Excessive Heat Warning, until 8 PM EDT this evening. For the Heat Advisory, from 11 AM to 8 PM EDT Saturday. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Dangerously hot conditions with heat index values up to 112 expected. * WHERE. In Maryland, Charles, St. Marys and Calvert Counties. In Virginia, Stafford, Spotsylvania and King George Counties. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT. Heat index values up to 104 expected. * WHERE. Portions of north central Maryland, central, northwest and western Virginia and panhandle West Virginia. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur.

* WHAT. Heat index values up to 109 expected. * WHERE. Portions of central, north central, northeast and northern Maryland, The District of Columbia and central, northern and northwest Virginia. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur.