andrewob said...
If you were in the water when the lightning hit near you, I think you'd be fine. The static discharge is looking for the shortest path to earth. Since you are in the water, you don't present a lower resistance path so it's unlikely you'd feel anything except a mild tingle.
Having said that, if the lightning chose to strike you on the arm or head and go through that part of you to the water, it could hurt a bit more...
"Tingles" come from AC. Lightening is DC. You will feel any static discharge that connects to you that is over about 2000V which equates to the same charge from pulling off a jumper. Lightening is Teravolts ++.
Lightening should dissipate semi-spherically in (under) seawater due to the high salt content. In fresh water its a different caper. If its just been raining in a lake it may continue to form spikes underwater to the next nearest discharge point - which could be you.
My advice, if lightening is around, get your kite down pronto (safety release) and get out of the water - in that order if possible.
Lightening kills more people each year than sharks.