Ice Storm is a Destruction Spell at the Adept level.
A freezing whirlwind that does 40 points of frost damage per second to health and stamina. Ice Storm is a very large whirlwind and serves as a weapon equipped to inflict damage on multiple enemies at once rather than one. This spell, along with others, can be upgraded through the unlocking of some Perks.
Ice Storm costs 109 magicka to cast.