Tempest

The Tempest is a massive, roiling storm which permeates much of the Underworld. While nowhere near as powerful as a Great Maelstrom (or even a regular maelstrom), the Tempest is nonetheless deadly. Without knowledge of the proper Byways to travel or usage of the Argos Arcanos.

The Tempest does not consist of mere wind, clouds, and water, like the storms of the Skinlands. It is made of broken glass, magma, nightmares, acid, and burning plasm. Also, unlike essentially two-dimensional storms which sit on an Earthly sea, the Tempest exists in three dimensions (although, to a traveller passing through the Tempest, it may appear to be two-dimensional).

Aside from Byways, the only areas in the Underworld free of the Tempest are Stygia, the other Dark Kingdoms, and the Far Shores.

The Shadowlands are "above" the Tempest and thus unaffected by them. Likewise, the Labyrinth and Oblivion itself are "beneath" the Tempest.