"Showers and thunderstorms located over the Florida peninsula, the southeastern U.S. coast, the northwestern Bahamas, and the adjacent Atlantic and Gulf waters are associated with a broad trough of low pressure," the National Hurricane Center said.

If the storm becomes tropical later this week, it will be the first tropical storm of the Atlantic hurricane season.

The National Hurricane Center has made several updates to its forecast protocol and graphics in order to improve messaging, accuracy, and more advanced warning.

The low-pressure area the NHC has been monitoring off Florida's eastern coast will bring heavy rain to the Carolinas before fizzling out.

The National Hurricane Center is tracking the first region of potential cyclone development since the hurricane season kicked off on Sunday. A nontropical area of low atmospheric pressure is expected to develop along the boundary of a stalled front that will be draped between the Carolinas and north Florida this week.