I was just talking to a friend in the NE. We were trying to figure out how many inches of snow this would have been.
Safe bet for NE - 1" rain = 10" snow
That's 10% moisture content. The "driest" snow out west is around 3% (and that is almost "smoke"). I don't know what the highest moisture content is, but my bet would be that even "cement" does not get much higher than 15% moisture content.