Tropical Storm Arthur has forced a change in plans for this year’s July 4th celebration at the Hatch Shell. The concert will be held tomorrow July 3rd. Typically that is a rehearsal but given concerns of officials with the storm and the fact that the musicians will be on hand already it is full speed ahead. You can find Boston Globe coverage here. If you are planning to attend there is important information from the Massachusetts State Police regarding security measure etc that can be found here.