In my opinion, Apocalypse cannot catch up with Storm since Storm is faster. So with Storm making a huge distance gives her a great advantage to play with her elements. First is an F5 tornado that Apocalypse would have a hard time stopping it if he can. Second, a huge lightning that will hurt Apocalypse to the core. Third, Storm using a combination of heat and cold temperature to finally disintegrate him, just like what she did to a mandroid and a certain phalanx.
Storm flies in victory