Level 1 Conjuration (Druid, Ranger, Sorcerer, Wizard)
Casting Time: Action
Range: 120 feet
Components: V, S
Duration: Concentration, up to 1 hour
Area: 20 ft. Radius
You create a 20-foot-radius Sphere of fog centered on a point within range. The Sphere is Heavily Obscured. It lasts for the duration or until a strong wind (such as one created by Gust of Wind) disperses it.
Using a Higher-Level Spell Slot. The fog's radius increases by 20 feet for each spell slot level above 1.