Weather Magic
Meteor Storm
Fire damage, multiple hits, small area, extendible duration.
Acid Rain
Poison damage, multiple hits, small area, extendible duration
Wind of Furies
Air damage, single hit, cone shaped travelling toward target (or target area in case of right click) starting at caster. Not sure but think the extra duration increases the time until which the spell starts to dissipate (Which mean a longer cone).
Lightning Storm
Water damage, single hit, huge area between 3/4 & 4/5 of my screen (1280x960).
Nature magic
Insect Swarm
Ethereal damage, lots and lot and lots of hits, small area, extendible duration.
Spikes
Piercing damage, single hit, very small area (trap sized), lingers red circled NPCs crossing the area will receive damage, extendible duration.
Earthquake
Guessing earth damage (it doesn't show what type of damage), single hit, same area as lightning storm. Peculiarity is that you can't chain multiple castings of this spell together that will result in a can't use spell now message.
Hammer
Bone damage, single hit, small area, extra is a stun on all red circled NPCs being targetted.