Complex sentence: This time, though, the wave quickly developed the deep convection it needed to become a tropical cyclone; as a result, the National Hurricane Center in Miami, Florida designated it as Tropical Depression Seven, just 255 miles east-southeast of Tuxpan, Mexico.
Split into simpler sentences: This time, though, the wave quickly developed the deep convection it needed to become a tropical cyclone. As a result, the National Hurricane Center in Miami, Florida designated it as Tropical Depression Seven, just 255 miles east-southeast of Tuxpan, Mexico.