Simplify the following text for a Grade 14 native English-speaking person.
Original: Drifting northwestward through Texas , Tropical Depression Erin maintained an area of convection near the center , with its widespread but scattered rainbands dropping moderate to heavy precipitation .
Simplified: Slowly moving northwestward through Texas , Tropical Depression Erin managed to keep an area of convection near the center , with its widespread , but scattered rainbands dropping moderate to heavy precipitation .