Simplify the following text for a Grade 13 native English-speaking person.
Original: The depression moved slowly to the north-northwest through a break in the subtropical ridge , and as convective banding features became more prominent the system intensified into Tropical Storm Beryl .
Simplified: The depression moved slowly to the north-northwest through a break in the subtropical ridge , and as convective banding features became more visible the system strengthened into Tropical Storm Beryl .