[Michael Thayne]

I went back and forth on whether the Accessibility limitation was enough to cover not having control over the exact effects of the storm. Feel free to make the case the limitation should have been larger.

Storm
Keywords: Area (Special).
Full Cost: 280/290/300/310/320/330 points for levels 1-6, plus 51 points for each additional level.
Casting Roll: IQ.
Range: 0.
Duration: 50 minutes.

Creates (or dispels) a storm in a radius of 0.1 × level miles around you. The caster chooses whether to make conditions better or worse, but the exact effects are unpredictable; the GM should pick effects that make sense given the pre-existing weather conditions. Typically, the degree of the change should be enough to change penalties for bad weather by ±2. This means the storm will be relatively mild if cast in conditions of dead calm; likewise dispelling a hurricane may leave behind an ordinary rainstorm (or at least windy weather).

This is also a Water spell and a Weather spell.

Statistics: Level 1 is Control Weather 1 (Accessibility, Only to create or dispel storms, -30%; Emanation, -20%; Extended Duration, 300×, +100%; Natural Phenomena, +100%; Persistent, +40%; Sorcery, -15%) [55] + Control Weather 5 (Accessibility, Only to create or dispel storms, -30%; Does not increase area, -50%; Emanation, -20%; Extended Duration, 300×, +100%; Natural Phenomena, +100%; Persistent, +40%; Sorcery, -15%) [225]. Levels 2-6 remove "Does not increase area" one level at a time [+10/level]. Further levels add Control Weather (Emanation, -20%; Extended Duration, 300×, +100%; Natural Phenomena, +100%; Only to increase area, -50%; Persistent, +40%; Sorcery, -15%) [+51/level].