Sleet Storm

3rd-level conjuration
Casting time: 1 action
Range: 150 feet
Target: 20-foot-tall cylinder with a 40-foot radius within range
Components: V, S, M (a pinch of dust and a few drops of water)
Duration: Concentration, up to 1 minute
Classes: Druid, Sorcerer, Wizard
Subclasses: Cleric (Tempest Domain), Druid (Circle of the Land), Fighter (Eldritch Knight), Rogue (Arcane Trickster), Warlock (The Fathomless), Warlock (The Genie (Marid))

Until the spell ends, sleet falls in a 40-foot-tall, 20-foot-radius Cylinder centered on a point you choose within range. The area is Heavily Obscured, and exposed flames in the area are doused.

Ground in the Cylinder is Difficult Terrain. When a creature enters the Cylinder for the first time on a turn or starts its turn there, it must succeed on a Dexterity saving throw or have the Prone Condition and lose Concentration.