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.
Kasi ya Return Stroke, Kurudi kiharusi, sehemu ya nguvu ya kutokwa umeme, ni kitu kati ya 1/3 ya 2/3c. mkusanyiko wa nishati ni juu sana kuliko juu ya uso Sun.