Control Winds

Druidic Transmutation/Alteration
Level: Druid 5
Range: Caster
Duration: 1 turn/level
Area of Effect: 40 ft radius/caster level
Components: V, S, M
Casting Time: 7 segments
Saving Throw: None

By the power of this spell, the druid can increase or decrease the force of the winds. For every caster level, the druid may change the speed of the wind by 3 miles per hour. An eye of calm with a radius of 40 ft remains around the druid and travels with him or her. The wind force increases (or decreases) at a rate of 3 miles per hour every round until the end of the spell’s duration, at which time it will return to normal, also at a rate of 3 miles per hour per turn.

Winds can be extremely destructive; ships are at great risk of sinking if wind speed reaches 60 miles per hour, and wind speeds of 75+ mph are as a full-fledged hurricane.