Foggy, Snowy, Type effect in Unity3D

How would you go about creating the eff开发者_如何学Goects of a blizzard in Unity3D? Take the cliffhanger level in COD MW2 as an example. I want it to limit the view of the player, and look like there is snow blowing around.

Thanks, Tate

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In short:

In Unity's render settings, you can make adjustments to the fog. Dense, whitish fog will limit visibility.

Falling snow particles (perhaps just in a renderer that stays right in front of the camera to help limit the number of particles) should help complete the effect.