No, this does not negate the evidence of global warming

A powerful storm that pummeled much of the West is promising to bring its chaotic mix of snow, sleet and ice to much of the Dakotas on Thanksgiving Day. The system closed roads and delayed flights from Anchorage to Salt Lake City on some of the busiest travel days of the year.

Meteorologists warned residents in the Dakotas to expect a range of messy wintery weather, from freezing drizzle in the eastern two-thirds of South Dakota to a possible blizzard in eastern North Dakota.

http://www.wfmj.com/Global/story.asp?S=13561409

And, it doesn't prove it, either.

It's just another anecdote.

Of course, you should hope the weather heads west to the Utah and Colorado ski mountains.