original: However, all of the storms that have impacted Arizona have formed in the latter parts of the Pacific hurricane season, and only storm remnants have affected the state before August.
simplifications: All of the storms that have impacted Arizona have formed towards the end of Pacific hurricane season.  Only storm remnants have affected the state before August. All of the storms that reached Arizona formed late during the Pacific hurricane season. Just one storm reached the state before August. Most storms that hit Arizona form in the Pacific during hurricane season.  Prior to hurricane season, weakened tropical storms effect the state. However, all storms that have impacted Arizona formed later in the Pacific hurricane season. Also, only storm remnants have affected the state before August. However, all of the storms that have impacted Arizona have formed in the end of the Pacific hurricane season. Only storm remnants affected the state before August. Every storm that affect Arizona was created towards the end of the Pacific Hurricane season. Only storms that were ending have affected Arizona earlier than August. Every storm that hit Arizona formed in the second half of the hurricane seasoon. The only storms that have impacted Arizona, formed in the late parts of the Pacific hurricane season, and only storm remains have affected the state before August. Before August, all the storms that have impacted Arizona are storms formed in the latter parts of the Pacific hurricane season. All the storms that had an affect on Arizona formed later in the Pacific hurricane season and only remains of storms had an affect before August.