Some storm related questions:

[sum1lost]

2.) When a storm clears up (caster dies), if another mage has used storm power (or was carrying that tome of strong-in-storms(igor), does that stay in effect?

[noname]

When do storms happen if a spell isn't cast for them? At random?

[Saulot]

I'm pretty sure that storm only comes into effect by spell, whether that is a spell cast in battle, the global enchantment Perpetual Storm, or created by the item 'Staff of Storms'.