 An excessive heat warning is in effect for inland areas of Delmarva through 8 o'clock tonight. I'm Mary Lou in the newsroom for the Talk of Delmarva. AccuWeather is expecting heat indexes to exceed 105 degrees. Not only is it very hot, but also very humid, so the beaches will offer at least a bit of relief. Weather conditions like this may cause a heat illness. Heat stroke is a serious concern and can lead to death.