Fog

Fog is a common but unpleasant weather condition in Wurm since it severly limits a player's vision. Fog can appear in various densities and last for anything between a few minutes up to hours. Fog is, second to night, the prime cause of newbie casualties. Fog is surrounded by many myths and rumors, including Oracle being able to create fog--he can't.

To disable the moving fog planes, turn off "pretty weather" in the settings.