Tropical Storm Chantal isn’t likely to bring anything more than another douse of rain to the Lowcountry this weekend, meteorologists said Tuesday.

But they are watching the storm, predicted to approach Florida. Chantal developed early for a Cape Verde storm, which are tropical cyclones grown from storms blown off Africa, and that suggests a busy storm season. Only 13 such storms have developed before July 15 in records dating to 1851, said Jeff Masters, of Weather Underground, on his blog.

The storm was expected to weaken to a tropical depression by the time it reaches the Bahamas on Friday, sheared by winds, National Hurricane Center forecasters said.

The long-range computer guidance suggests that what’s left of the storm will stay offshore from South Carolina, said Mark Malisk, severe weather liaison with the S.C. Climate Office.