Obscuring Snow

A swirling snow vapor arises around you, and follows you from that point on. The snow obscures all sight, including darkvision, beyond 5 feet. A creature 5 feet away has concealment (attacks have a 20% miss chance). Creatures farther away have total concealment (50% miss chance, and the attacker cannot use sight to locate the target). A strong wind (21+ mph) disperses the snow in 4 rounds. A very strong wind (31+ mph) disperses the snow in 1 round. A fireball, flame strike, or similar spell burns away the snow in the explosive or fiery spell's area. A wall of fire burns away the snow in the area into which it deals damage. This spell does not function underwater. Creatures with snowsight are immune to the effects of this spell.
 

You summon a swirling vapor of snow that billows out from you in a 30-foot-radius, 30-foot-high cylinder, centered on you and moving with you for the duration. The snow lightly falls but thickens the air into a dense, shifting screen. Targets within 5 feet are lightly obscured, while creatures outside of 5 feet are heavily obscured.   A strong wind (21+ mph) will disperse the snow after 4 rounds, while a very strong wind (31+ mph) will disperse it after 1 round. And Fire will burn away the snow in the area in which it deals damage for 1 round before more falls. Fire spells that continuously deal damage, such as a Wall of Fire continue to burn the snow for the duration.   This spell does not function underwater.   At Higher Levels. When you cast this spell using a higher level spell slot, increase the radius by 10 feet for each slot level above its base level.