All storm would have to do is keep Hulk at bay with her winds and generate a good sized Sky-to-ground lightning bolt and direct it at his head--120,000,000+ volts
I remember there was a discussion in the other thread. It was said, once Hulk's synapsis is fried(psychi), his healing factor is inconsequential.
Syanpsis is electrical energy, so it is possible for her to do it without Cable.--just overload his electrical brain or cardiac activity.
Think of is as like a pressure point(s) on Hulk.
Strength is not everything in a fight. Finnesse, strategy and intellect can go far as well.
Cuncussive force probably wouldn't work, so that scratches out winds. They can only be used as diversionary or weakening tactic.
Temperature may work as well haven't figured out how yet though.
Her electrical powers concentrated on a vital point is her best bet. His brain has been shown to be vulnerable to her bio-electric bolts, in conjucntion with cable's psi bolt. So, a fully charged one from the sky, psionically concentrated on his Brain may work just brilliantly.