 Here's a look at your Delmarva forecast. A heat advisory begins at 11 a.m. tomorrow and continues 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. Lots of sunshine again Tuesday. High temperatures reach up to 99. I'm meteorologist Paul Trombley. From the top of Delmarva Weather Center along the coast.