Complex sentence: During the next day, Madeline slowly developed an eye before intensifying into a hurricane based on reports from a Hurricane Hunter aircraft despite th fact that the aircraft reported winds 70 mph (120 km/h) winds and a pressure of 984 millibars.
Split into simpler sentences: During the next day, Madeline slowly developed an eye before intensifying into a hurricane based on reports from a Hurricane Hunter aircraft. Despite the upgrade, the aircraft reported winds 70 mph (120 km/h) winds and a pressure of 984 millibars.