Complex sentence: Late that day, Iris attained hurricane status just to the southwest of the southern tip of the Dominican Republic, and the NHC noted land interaction with the Greater Antilles as the only factor impeding further development.
Split into simpler sentences: Late that day, Iris attained hurricane status just to the southwest of the southern tip of the Dominican Republic. Upon Iris becoming a hurricane, the NHC noted land interaction with the Greater Antilles as the only factor impeding further development.