 He says how long the heat will stick around and the normal temperature for this time of year are also deciding factors. Keep it here with your weather alert station. We'll have updates every 10 minutes on the 8th. We have encouraging news this morning about the health of the Chesapeake Bay. It's received its best environmental grade in more than 20 years. It is only a C+, but that score from the University of Maryland Center for Environmental Science is up from a C. The group says we're starting to see the results of a lot of hard work.