Mud From Sky

Mud From Sky are meteorological creatures who, for reasons unknown to most Adepts, deposit large quantities of mud or muddy water from the sky to the ground. Because doing this is rarely harmful to anyone, Adepts largely dismiss Mudder sightings or activity (they have bigger fish to fry...).
AKA: Mudders.
References:
-http://www.popularmechanics.com/science/environment/natural-disasters/4331114
-http://www.sott.net/article/151756-Texas-Why-Was-It-Raining-Mud