Storms are Silvers who can, to some extent, manipulate the weather.
"Storms are elementals, almost hybridized in nature, as they can change or control weather patterns, resulting in a manipulation of wind, rain, and other precipitation. However, storm abilities are considered erratic in nature, as storms themselves are large and difficult to direct. A storm cannot, for example, accurately target a lightning strike on a single target." -Victoria Aveyard "War Storm" "On Silverblooded Abilities"