Prospero's full storm Spell

E/F/M:

If storm clouds are overhead, this dweorner starts immediately upon activation, but otherwise the Effect is delayed as follows: Clear, Cloudless Day: I hour Partly Cloudy Day: 5 ATs Overcast Day: 1 AT This Spell engenders a massive rainstorm. complete with thunder, lightning, sustained winds of 40 mph. gusting to 55-65 mph. and heavy rain, which instantly dissipate, fog, gas, and other clouds or like sub-stances. and extinguishes natural fires of even large extent after one or more ATs duration. The Casting's Time duration has two parts. the summoning of the storm as already detailed and the actual storm. The length of the storm Effect will be two hours plus one AT for every STEEP point of the caster in this Sub-AreaÑor some lesser duration at the caster's option upon activation of the dweomer. During the storm the Effect will remain (lx. over the Area. Rainfall will be. at one inch per hour. In addition to preventing seabome aerial movement and upsetting items or quadrupedal creatures of less than 75 poundsÑbipedal ones of under 200Ñwhen they attempt movement will have a 1 in 6 chance per AT of inflicting 1 to 20D6 Physical damage (Blunt, Piercing, Impact. or ElectricalÑdetermine as if rolling for location, with Non-Vita, Blunt, etc). plus location modifier (again) for any non-Electrical PD. on any creature exposolf to its elements. Tree branch. will be broken off: moderately large trees will be uprooted. The storm will automatically inflict on non-stone structures 1D10 points of Impact type Physical damage per AT of Effect