You create a Cylinder of strong wind 20 feet in radius and 60 tall that lasts for the duration. Each creature that is in the cylinder at the start of its turn is pushed 10 feet in a randomly determined direction and must succeed on a Strength saving throw or be knocked prone. At the start of each of your turns, creature in the cylinder must make a constitution saving throw, taking 4d8 thunder damage on a failed save or half as much damage on a successful one.

Small flames in the area are extinguished. Protected flames such as those of lanterns dance wildly but have no further effect. Gas or vapor that are in the cylinder are dispersed.

The cylinder of strong wind moves 5 feet in a random direction at the end of each of your turns, or it instead moves up to 20 feet however you choose if you expend a Bonus Action.

Using a higher level spell slot: The thunder damage increases by 1d8 for each slot level above 3rd