Thunder snow - and I missed it!

How can that be? How could I miss a weather phenomenon that comes once in a blue moon? There was snow forecast for last night and today, but the weather apparently didn't believe the forecast since our weather was steady rain. That is, it was rain until late in the afternoon when that white stuff started falling. I just checked the National Weather Service site, and saw the statement "Thunder snow occurring across Bostons western suburbs". Hmmm... I've never experienced thunder snow - and it doesn't seem to want to visit my house tonight. Hey - if it has to snow anyhow, it might as well surprise us by throwing in some thunder too!