The Capital Weather Gang at WaPo has an interesting compilation of how the professional meteorological world is looking at the forcast for this storm:
Wisdom on the state of weather forecasting and the embarrassing New York City blizzard forecast

Some big questions to think about:

What is the best way for meteorologists to communicate the uncertainty in forecasts of severe and life threatening weather events to government officials and emergency planners?

Assuming they understand that range of uncertainty, how should those planners use those forecasts? Plan for the worst case? Do nothing and hope for the best case? Take a middle ground?

Likewise, how should we as individuals respond to those forecasts?
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"Toto, I've a feeling we're not in Kansas any more."
-Dorothy, in The Wizard of Oz