The National Hurricane Center in Miami says tropical storm warnings have been issued for portions of the Carolinas.

MIAMI (AP) — Tropical Storm Chantal has formed off the southeast U.S. coast. The National Hurricane Center in Miami says tropical storm warnings have been issued for portions of the Carolinas. Tropical storm conditions are expected in the affected areas later Saturday.

A slow-developing weather system is trying to get its act together over the Southeast U.S. this Fourth of July.

The National Hurricane Center says there is a 50% chance over seven days that a tropical or subtropical cyclone could form.

The First Warning Weather team is calling for Impact Weather on July 5. A very wet weather pattern is expected over the holiday weekend, with the risk of some heavy rain.Sign up for our NewslettersPlus,