The hatched areas on the National Hurricane Center's tropical outlook map indicate "areas where a tropical cyclone — which could be a tropical depression, tropical storm or hurricane — could develop," said National Hurricane Center Deputy Director Jamie Rhome.

Tropical cyclone is the generic term used by the National Weather Service, NOAA and the National Hurricane Center for any tropical system, even if it's in the Atlantic basin.

As of Wednesday morning, the National Hurricane Center held the chances of the system developing into a tropical depression or storm at 40% over the next two to seven days. The greatest impacts will likely be in the northern end of the Gulf,

The National Hurricane Center is monitoring a disturbance expected to stall over or near Florida, which could affect your Fourth of July weekend.