Call Lightning Storm

Player's Handbook v.3.5 (PH)Core (3.5)
School
Evocation
Casting Time
1 full round
Components
V, S
Range
Long (400 ft. + 40 ft./level)
Duration
1 minute/level
Saving Throw
Reflex half
Spell Resistance
Yes

This spell functions like call lightning, except that each bolt deals 5d6 points of electricity damage (or 5d10 if created outdoors in a stormy area), and you may call a maximum of 15 bolts.