# Storm Sphere > [!info] Spell Details > | | | > |---|---| > | **Level** | 4th | > | **School** | [[Evocation]] | > | **Casting Time** | 1 Action | > | **Range** | 150 feet | > | **Components** | V, S | > | **Duration** | Concentration, up to 1 minute | > | **Classes** | Sorcerer, Wizard | --- ## Description A 20-foot-radius sphere of whirling air springs into existence centered on a point you choose within range. The sphere remains for the spell's duration. Each creature in the sphere when it appears or that ends its turn there must succeed on a Strength saving throw or take **2d6 bludgeoning damage**. The sphere's space is **difficult terrain**. Until the spell ends, you can use a bonus action on each of your turns to cause a bolt of lightning to leap from the center of the sphere toward one creature you choose within 60 feet of the center. Make a ranged spell attack. You have advantage on the attack roll if the target is in the sphere. On a hit, the target takes **4d6 lightning damage**. --- ## At Higher Levels When you cast this spell using a spell slot of 5th level or higher, the bludgeoning damage increases by **1d6** and the lightning damage increases by **1d6** for each slot level above 4th.