Blizzard

A howling storm of thick snow and ice crystals appears in a 20-foot wide, up to 80-foot high cylinder. The area is heavily obscured by swirling snow. When the storm appears, each creature in the area must make a Constitution saving throw. A creature takes 8d8 cold damage on a failed save, or half as much damage on a successful one. A creature must also make this save when it enters the area for the first time or ends its turn there.

A creature who takes cold damage from this spell has disadvantage on Constitution saving throws made to maintain concentration until the start of its next turn.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each slot level above 4th.