"The power company that runs the substation, @Con Edison, said the blue light was caused by an “electrical arc flash,” according to a statement reported by ABC News. When a strong electrical current passes through the air, it causes a blinding light, called an electric arc.The current alters the particles in the air and creates a charged gas.you might have seen the same thing briefly when a lightbulb burns out, watching, construction workers weld steel, or simply when lightning strikes.""