Storm, signified by three lightning bolts, designated a particular position inside the Nihil pirate hierarchy. Occupying a space beneath a Tempest yet above both Clouds and Strikes, Storms oversaw a trio of subordinates. These individuals reported directly to the Tempest Runner to whom the Storm was beholden.
The StarWars.com article that communicated the delay of the Star Wars: The High Republic project provided the initial mention of the Storm rank.