Let it never be said I cannot admit when I'm wrong. I saw the following comic:
And thought - "what a nice way to sum up a non-obvious climate issue." However, according to the NOAA, the comic (and I) were wrong.
They found no evidence — no human “fingerprints” — to implicate our involvement in the snowstorms. If global warming was the culprit, the team would have expected to find a gradual increase in heavy snowstorms in the mid-Atlantic region as temperatures rose during the past century. But historical analysis revealed no such increase in snowfall. Nor did the CSI team find any indication of an upward trend in winter precipitation along the eastern seaboard.
Sadly - this will no doubt cause all climate change deniers to go nuts, but science is science. It's NEVER 100%, and anyone who points at any single data point as proof is lying to you.