Quote Originally Posted by LordAllMIghty View Post
No, her thoughts are not faster than light. Storm's mind is connected to the entire planet (or quadrant of space when not connected to a planet), she manipulates the elements (wind, water. Earth and Eletro-magnetic) by psionically (telekinesis) moving atomic and subatomic particles to manipulate her environment.

She pulls elements from other areas to create weather effects...this is the reason her powers are sometimes limited in certain places. While her manipulation is very fast, it is not faster than lightspeed.
I think it depends on what she is doing because the bigger the feat the more time it would take but as a lightning bolt or a hurricane it takes very very less.