* WHAT. Heat index values of 100 to 104 expected. * WHERE. Bradford, Lackawanna, Luzerne, Susquehanna, and Wyoming Counties. * WHEN. From noon today to 8 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 100 expected. * WHERE. In New York, Delaware and Sullivan Counties. In Pennsylvania, Northern Wayne, Pike, and Southern Wayne Counties. * WHEN. From noon today to 8 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the Heat Advisory, heat index values up to 97 expected. For the Excessive Heat Watch, dangerously hot conditions with heat index values up to 104 possible. * WHERE. Portions of northern New Jersey and southeast Pennsylvania. * WHEN. For the Heat Advisory, from 10 AM this morning to 6 AM EDT Thursday. For the Excessive Heat Watch, from Thursday morning through Sunday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values up to 101 expected. * WHERE. A portion of central Pennsylvania. * WHEN. From noon today to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The New Jersey Department of Environmental Protection has issued a code orange air quality alert Tuesday for Sussex and Warren Counties. 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 http://www.state.nj.us/dep/