Speed of the Return Stroke, the main discharge, strike, the strongest part of the electric discharge, is something between 1/3 to 2/3c. Which is really enough, given that a higher speed than c, according to current concepts of physics in our observable universe does not exist.
Bilis ng Return Stroke, Return stroke, ang pinakamatibay na bahagi ng electric naglalabas, ay isang bagay sa pagitan ng 1/3 hanggang 2/3c.