* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Drum Point MD to Smith Point VA and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. From 4 PM this afternoon to 6 AM EDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Heat index values up to 108 expected. * WHERE. In Maryland, Dorchester, Inland Worcester, Somerset, and Wicomico Counties. In Virginia, Cumberland, Eastern Louisa, Fluvanna, Prince Edward, and Western Louisa Counties. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values ranging from 105 to 107. * WHERE. In Delaware, Kent and Inland Sussex Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties. * WHEN. Until 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Very warm and humid conditions tonight will offer little relief from the heat.

* WHAT. Heat index values ranging from 100 to 104. * WHERE. Portions of northern Delaware, central and southern New Jersey, and southeast Pennsylvania. * WHEN. Until 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Very warm and humid conditions tonight will offer little relief from the heat, especially in urbanized areas.

* WHAT. Heat index values up to 108 expected. * WHERE. Dorchester, Inland Worcester, Somerset, and Wicomico Counties. * WHEN. For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Drum Point MD to Smith Point VA and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. From 4 PM this afternoon to 6 AM EDT Saturday. * IMPACTS. Conditions will be hazardous to small craft.

* 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 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.