Forcestream Currents

Forcestream is the series of major air currents that can potentially move an Ethereal beyond their immediate home group to an entirely separate group of Ethers. They will be changed by the travel, and there is no guarantee they will ever return.
Part interstate system, part driving force, the Forcestream consists of significant horizontal air currents that flow in particular directions. As a vehicular structure, the streams are always in motion. Thus it takes a certain level of skill and effort for any one ether to ride the forcestream with a particular destination in mind.
Legends have been built around the dangers of the forcestream; for younger ethereals, there’s a draw toward the unknown and risk-taking (think train-hopping joyriding). The more mature, stable ethereals communicate the sense of structure to the “family” groups, explaining the structure from memory and defining its current purpose within the Ethereal world.
The currents that comprise the Forcestream are determined by stretches of atmosphere pressured at the same level. Atmospheric circulation maintains the motion of each current. Crosscurrents have pockets that act as switching stations; particular care must be taken by the traveling ether to ensure that they stay on the appropriate current, or to move off of the current at the pocket with the necessary speed to avoid collision other travelers.
Within the Ethereal society there are designated Signals: those who watch for potential collisions or other such dangers that would harm or disrupt an individual ethereal being (or multiple ethereal beings). The Forcestream Signals sent out warnings when they recognize any potential for collision of ethereals traveling via crosscurrents or gathering in Forcestream pockets.
As with all air movement, air particles and elements can be worn off or picked up in the course of movement; this is extremely common occurence for ethereals when moving via Forcestream. Thus the farther they travel the more likely they are to altered as a being by the time they leave the force stream.