What is the average thickness of a lightning bolt?

Question

What is the average thickness of a lightning bolt?

Answer 1

You can estimate by the objects it is striking, but the problem is the intense illumination.

The "lightning charge channel" is 2 in (or 5 cm) according to

http://www.space.com/scienceastronomy/li...

Answer 2

its electricity shoooting from the sky to the ground it has no thickness

Answer 3

Lightening is basically just a very big spark. A spark is just a flow of electrons from one place to another.  

The edge of the flow of electrons is not sharply defined. It's a bit like asking the average thickness of a gust of wind.

However for a simpler answer. If caught on film the glowing bolt normally appears 1 to 5cm wide.