Simplify the following text for a Grade 14 native English-speaking person.
Original: However , deep convection was maintained near the increasingly organizing center , and at 0300 UTC on August 15 the National Hurricane Center classified it as Tropical Depression Five about 425 miles ( 685 km ) southeast of Brownsville , Texas .
Simplified: However , deep convection was kept near the increasingly organizaing center , and at 0300 UTC on August 15 the National Hurricane Center named it as Tropical Depression Five about 425 miles ( 685 km ) southeast of Brownsville , Texas .