Summary of charge regions in a typical MCS. Induced charge at the surface is also depicted. Broad layers of negative and positive charge in the stratiform region favor intracloud lightning with long, horizontal channels. This type of intracloud lightning is called spider lightning. Spider lightning can jump from cloud-to-ground, usually as a positive CG strike. Note that the convective and anvil regions of an MCS have the same charge structure as is found in isolated storms.