I made some recordings of the snow, an excerpt is linked in my blog, the recording here. I didn't use any of the recordings for this piece, choosing instead to 'model' my impression of snow falling. I also wanted to dust off my SuperCollider skills for class, so this provided a nice opportunity. I used SC3 for a lot of the 'icy' sounds -- although I can't recall if I used the native program or my [sc3~] Max/MSP object.
We lost power at one point, but I was able to get this music done. I love this photo, taken during the power-outage: