Storm is given the opportunity to attack Superman with all she is got, the battle takes place on Earth but she can use any power she can draw upon from other sources as long as she can be applied without killing herself.
She can attack Superman for a month in which Supes can use his powers to evade her.
Afterwards she can attack Superman directly and he will be receiving all the attacks directly only relying in his ressistance to survive, this is for eight days.
If Supes survives this barrages, he can attack Storm.
Superman falls asleep from a combination of boredom and the lulling feeling of a gentle breeze. 2DamnLoud counts that as a KO and proceeds to randomly call up the scans (with his distorted, decontextualised reading of them) in every Storm thread on the internet.
Superman first dodges every attack while reading hentai comics of Storm and Rogue, then takes all her blows while jacking off to said comic, and after 8 days, Superman hits her with 3 tons of supercum, blowing her head up.
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PYRON WOULD WIPE THE FLOOR WITH STORM LULZ!
Magic lighting does, as wielded by Thor or Captain Marvel. Not regular lighting called up by a mutant; that would just irritate him. After several days, it still wouldn't K.O. him.
I'm afraid Storm can't harm Superman, really. Unless she can suck the air out of his lungs...
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"I'm not smart so much as I am not dumb." - Harlan Ellison
Actually Supes has low showings against regular lighting, it does something to his brain synapses or stuff, Batman has used it as a regular weapon against him.