 Here's a look at your Delmarva forecast. A heat advisory begins at 11 a.m. tomorrow and remains in effect until 8 p.m. tomorrow night. Lows level off around 78 overnight under mainly clear skies. Winds out of the southwest, 5 to 10 miles per hour. Mainly sunny skies again Tuesday. High temperatures reach up to 99. Partly cloudy Tuesday night, 78. I'm meteorologist Paul Trombley. From the talk of Delmarva Weather Center, inland. Currently, it's 79 degrees.