Simplify the following text for a Grade 11 native English-speaking person.
Original: Possibly due to less friction of the eyewall or moving over warm waters of the Gulf Stream , Wilma again re-intensified to reach winds of 125 mph ( 200 km\/h ) before cold air and wind shear penetrated the inner core of convection .
Simplified: The hurricane again re-intensified before cold air and wind shear penetrated the inner core of convection .