* 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 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. * WHERE. Chesapeake Bay from Pooles Island MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Eastern Bay, Choptank River to Cambridge MD and the Little Choptank River, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. Until 6 AM EDT early this morning. * 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 100 to 105 expected. * WHERE. Portions of north central and western Maryland, northwest and western Virginia and eastern and panhandle West 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 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 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.