 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. Mainly clear tonight with a low of 78. Southwest winds 5 to 10 miles per hour. Highs level off around 99 tomorrow. Mainly sunny. Partly cloudy skies tomorrow night, 78. I'm meteorologist Paul Trombley. From the talk of Delmarva Weather Center, inland.