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Can lightning travel between clouds?

Published in Lightning Phenomena 2 mins read

Yes, lightning can travel between clouds.

Understanding Cloud-to-Cloud Lightning

Lightning isn't just a phenomenon that happens between the sky and the ground. A significant portion of lightning activity occurs within or between clouds. This is commonly referred to as cloud-to-cloud (CC) lightning.

Here's a breakdown of what cloud-to-cloud lightning entails:

  • Definition: Cloud-to-cloud lightning is an electrical discharge that occurs between two or more clouds.
  • Mechanism: It happens due to a build-up of electrical charge within different parts of clouds, or in separate clouds. When the potential difference becomes large enough, a discharge occurs, resulting in a lightning flash.
  • Visibility: Cloud-to-cloud lightning can manifest in various ways, sometimes as a bright flash that illuminates the sky, or as horizontal streaks of light often seen beneath clouds.

Spider Lightning

One interesting form of cloud-to-cloud lightning is known as spider lightning.

  • Description: Spider lightning refers to long, horizontally traveling flashes that are often seen on the underside of stratiform clouds.
  • Association: This type of lightning is frequently associated with positive cloud-to-ground (+CG) flashes.
  • Appearance: Spider lightning's extended, web-like appearance is what gives it its name, making it a visually striking form of cloud-to-cloud discharge.

Key Points About Cloud-to-Cloud Lightning:

Feature Description
Type Electrical discharge between two or more clouds.
Cause Build-up of electrical charge between different parts of clouds or separate clouds.
Appearance Bright flashes, horizontal streaks (spider lightning), and various other forms.
Relationship with CG lightning Often associated with +CG flashes (especially spider lightning).


In conclusion, the reference information clearly confirms that lightning does not only strike the ground but also travels between clouds, including the interesting example of spider lightning.

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