* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Pooles Island MD to North Beach MD, Eastern Bay, and Choptank River to Cambridge MD and the Little Choptank River. * WHEN. From 2 PM this afternoon to 2 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 20 kt. For the second Small Craft Advisory, south winds 10 to 15 kt with gusts up to 25 kt expected. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. For the first Small Craft Advisory, until 6 AM EDT early this morning. For the second Small Craft Advisory, from 2 PM this afternoon to 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Heat index values between 105 to 110 expected. * WHERE. Portions of central, north central, northeast, northern and southern Maryland, The District of Columbia and central, northern and northwest Virginia. * WHEN. From 11 AM to 8 PM EDT today. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. Oppressive heat and humidity will overspread the area today and last into Sunday. Little relief from the heat is expected tonight with low temperatures in the mid 70s to near 80 for most, which will compound heat stress on those without air conditioning.

* WHAT. Heat index values up to 107 expected. * WHERE. Portions of central and southern Delaware, northeast Maryland, and southern New Jersey. * WHEN. From 6 AM to 8 PM EDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. South winds 10 to 15 kt with gusts up to 25 kt expected. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. From 2 PM this afternoon to 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Pooles Island MD to North Beach MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, Eastern Bay, Choptank River to Cambridge MD and the Little Choptank River, and Patuxent River to Broomes Island MD. * WHEN. From 2 PM this afternoon to 2 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Heat index values up to 105 expected. * WHERE. Portions of central, east central, eastern, north central, south central, and southeast Virginia. * WHEN. From 11 AM this morning to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 105 expected. * WHERE. Portions of central, east central, eastern, north central, south central, and southeast Virginia. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Oppressive heat and humidity will continue into Sunday. Temperatures only fall back into the mid 70s to near 80 for most tonight which will compound heat stress on those without air conditioning.

* WHAT. South winds 10 to 15 kt with gusts up to 25 kt expected. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. From 2 PM this afternoon to 6 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay from Pooles Island MD to North Beach MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, Eastern Bay, Choptank River to Cambridge MD and the Little Choptank River, and Patuxent River to Broomes Island MD. * WHEN. From 2 PM this afternoon to 2 AM EDT Sunday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Heat index values up to 108 expected. * WHERE. Portions of central and southern Delaware, northeast Maryland, and southern New Jersey. * WHEN. From 6 AM to 8 PM EDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 108 expected. * WHERE. Portions of central,northeast, and southern Maryland, The District of Columbia, and central and northern Virginia. * WHEN. From 11 AM this morning to 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. Oppressive heat and humidity will overspread the area today and last into Sunday. Little relief from the heat is expected tonight with low temperatures in the mid 70s to lower 80s, which will compound heat stress on those without air conditioning.

The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert Saturday for the Baltimore City Metro and Annapolis region. A Code Orange Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx.