A fantastically fantastic picture of thunder and rainbow in the same sky

It is very fantastic. A rainbow is hanging over during the thunder noise.

In what state is this way, it is as follows.
Incredible pictures: the moment lightning shared the sky with a rainbow | the Daily Mail

This is an event in the city called Fort Smith in Arkansas, southern USA. According to the witnesses, he saw a rainbow of seven colors on the horizon in the roar of the lightning, so he felt unbelievable.

The clouds in this picture are so-called cumulonimbus. This cloud called a storm accompanied by thunder light, and it caused rain. But the thing called rain does not always come down with the same condition, it will rain and stop, even if it keeps falling, its amount will become faster or gradual with the passage of time. Then it is extremely rare, but the rain stops even though the thunder is ringing like this time, it seems that the phenomenon that the rainbow can be seen to occur.

But I doubt, Where is the sunlight shining from? The point. This is a further enlargement of the principle of a prism that can make a rainbow, as water droplets floating in the air refracted slight sunlight and carried it, it seems to rain rainbow even in thunder and storm .