Tropical Storm Andrea forms in the Gulf of Mexico

(CNN) -- Tropical Storm Andrea formed in the Gulf of Mexico on Wednesday, the National Hurricane Center has reported.

It's the first storm of the 2013 Atlantic hurricane season.

An Air Force reconnaissance aircraft found a well-defined circulation over the east-central Gulf, and advisories on Tropical Storm Andrea will start shortly, the center said.

The system has a high chance of becoming a tropical cyclone during the next 48 hours.