Thunder-grapuel on Saturday

I was up at Beaver Reservior (just west of the Peak to Peak Highway) on Saturday afternoon. Not only did it snow (thanks to a passing cold front), but at one point we heard quite a bit of thunder and little styrofoam-like pellets started to come down--sort of a cross between snow and hail. Those little pellets are called graupel and they are much less common than snow or hail. More info here on how it forms. Very interesting stuff.