* WHAT. Prolonged dangerously hot conditions with heat index values in excess of 100 degrees possible. * WHERE. Portions of north central, northeast, and northwest Ohio and northwest Pennsylvania. * WHEN. From Monday morning through Friday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Prolonged dangerously hot conditions with heat index values in excess of 100 degrees likely. * WHERE. Portions of north central, northeast, and northwest Ohio and northwest Pennsylvania. * WHEN. From 11 AM this morning to 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Dangerously hot conditions for several days are expected. Peak afternoon heat indices around 100 degrees are likely each day from Monday through Friday. * WHERE. Southeast Michigan. * WHEN. From Monday afternoon through Friday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS. The effects of heat on the human body get worse as the number of consecutive days of heat increase. Nighttime lows will only drop into the 70s this week, which will offer just modest relief from the heat. In addition, highs in the lower 90s may persist into the weekend.

The Michigan Department of Environmental Quality has issued an Air Quality Advisory for Monday June 17, for elevated levels of ozone. Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Wayne, Washtenaw, Macomb, Oakland, Livingston, St. Clair, and Monroe. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with respiratory diseases such as asthma. People and businesses are urged to avoid activities which lead to ozone formation. These activities include, refueling vehicles or topping off when refueling, using gasoline powered lawn equipment, and using charcoal lighter fluid. Positive activities include, driving less, telecommuting, walking or biking, delaying or combining errands and using water-based paints. For further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov.