Simplify the following text for a Grade 13 native English-speaking person.
Original: It gradually decayed into a surface low pressure trough , and developed into two disturbances ; one was centered 290 miles ( 490 km ) south-southeast of Cape Cod and another was located 200 miles ( 320 km ) south of Cape Hatteras , North Carolina .
Simplified: It slowly decayed into a surface low pressure trough , and developed into two disturbances ; one was centered 290 miles ( 490 km ) south-southeast of Cape Cod and another was located 200 miles ( 320 km south of Cape Hatteras , North Carolina .