Quasielemental Plane of Lightning
The Quasielemental Plane of Lightning is also called the Plane of Storms, the Vengeful Land, or the Great Illumination - it all depends on who gets asked. A traveler knows when he's entered the plane, though, because the sky is filled with black clouds that flash with internal fires, the air tingles with ozone, and the touch of electricity prickles his hairs. Bolts leap from cloud to cloud and the sky rings with the laughter of lightning quasielementals. It's a scary place to fly through - a cutter can dodge a jagged bolt only to steer himself into the path of a tumbling ball of lightning. Then there's the glow, St. Elmo's fire, that dances over everybody that comes into the plane. People and things glow with an unnerving, electrical brilliance.
The storms are lighter close to the Elemental Plane of Air. Near the Positive Energy Plane, clouds and storms give way to a solid sheet of rippling energy. At the very gateway to the Positive Energy Plane stands the Tower of Storms, a mysterious bridge into the Positive.
Note: The Quasielemental Plane of Lightning originally appeared in this form in the Planescape AD&D campaign setting from TSR. Its use here is for the purposes of providing context for the campaign only.