first of all: this is a really cool image. i just love the way you've been able to capture this. it must have been amazing to witness this. the contrast between the cold colours on the mountain and the warmer colours in the clouds behind the mountain work really well. however i also agree with *hariettsfriend, and i would like to add that if you could open the exposure of mountain up just a bit it would also get more impact. perhaps if you can't get the white balance right, try developing it 2 times and use layer masks to paint in the two different white balances. perhaps this would also work best for the exposure because i actually like the tone the sky has now.
it doesn't mean i think it's a bad photo, but i think that you would increase its impact a lot more if you would develop (i seriously hate the word photoshop) this photo a bit more. beautiful work