 Heat advisory until 6 a.m. Wednesday for Sussex and Kent counties in the first state. Heat advisory from 10 a.m. to 8 p.m. for Dorchester, Wicomico, Somerset, Worcester, Acomac and Northampton counties. Now, when you check the National Weather Service site, though, in both cases, they talk about both with the excessive heat warning and with the heat watch or heat advisory. Excuse me. They talk about.