Sleet Storm

(Player's Handbook v.3.5, p. 280)

Conjuration (Creation) [Cold]
Level: Druid 3, Sorcerer 3, Wizard 3, Disciple of Thrym 3, Warmage 3, Sha'ir 3, Savant 3 (Arcane), Cold 3, Storm 4,
Components: V, S, M, DF,
Casting Time: 1 standard action
Range: Long (400 ft. + 40 ft./level)
Area: Cylinder (40-ft. radius, 20 ft. high)
Duration: 1 round/level
Saving Throw: None
Spell Resistance: No

Driving sleet blocks all sight (even darkvision) within it and causes the ground in the area to be icy.
A creature can walk within or through the area of sleet at half normal speed with a DC 10 Balance check.
Failure means it can't move in that round, while failure by 5 or more means it falls (see the Balance skill for details).
The sleet extinguishes torches and small fires.
Arcane Material Component: A pinch of dust and a few drops of water.