Complex sentence: The cyclone moved into the Gulf of Honduras on September 17, where it restrengthened into a tropical storm and turned to the north-northwest in response to a mid- to upper-level trough over the eastern Gulf of Mexico.
Split into simpler sentences: The cyclone moved into the Gulf of Honduras on September 17. It restrengthened into a tropical storm and turned to the north-northwest in response to a mid- to upper-level trough over the eastern Gulf of Mexico.