Simplify the following text for a Grade 11 native English-speaking person.
Original: During mid-May , a disorganized low pressure area formed in the Atlantic Ocean about 290 miles ( 465 kilometers ) south-southwest of Wilmington , North Carolina .
Simplified: The following day , an area of low pressure developed along the boundary about 290 miles ( 465 km ) south-southwest of Wilmington , North Carolina .