Complex sentence: Hurricane Helene was of the most intense storms of the 1958 Atlantic hurricane season and the only hurricane to affect the United States, also Helene was one of several hurricane to impact the outer banks as a category 4 hurricane (others being Hurricane Able of 1950).
Split into simpler sentences: Hurricane Helene was one of the most intense storms of the 1958 Atlantic hurricane season and the only hurricane to affect the United States. Also Helene was one of several hurricanes to impact the outer banks as a category 4 hurricane (others including Hurricane Able of 1950).