Can you turn the "rotation" option offered by the Control Winds spell on its side, so that instead of creating a vortex around a vertical axis, it creates a vortex around a horizontal axis instead? There seems to be nothing in the spell's text that says that the rotation option must use a vertical rotation axis, and horizontal vortices are well-known in nature IRL (and would be well known to any druid in D&D as well who's spent significant time wild-shaped into birds, especially flocking birds).
Relevant spell text:
Area: 40 ft./level radius cylinder 40 ft.high
You alter wind force in the area surrounding you. You can make the wind blow in a certain direction or manner, increase its strength, or decrease its strength.
The new wind direction and strength persist until the spell ends or until you choose to alter your handiwork, which requires concentration. You may create an “eye” of calm air up to 80 feet in diameter at the center of the area if you so desire, and you may choose to limit the area to any cylindrical area less than your full limit (for example, a 20-foot-diameter tornado centered 100 feet away).
Wind Direction: You may choose one of four basic wind patterns to function over the spell’s area.
- A rotation causes the winds to circle the center in clockwise or counter-clockwise fashion.