In this example, the +NAO is a warm variable, yes. In the 3-5" snowfall, -NAO was a factor too, yes. Let's see if the +PNA/-EPO/+NAO and -PNA/+EPO/-NAO correlates in February.. the pattern is about 0.40 (+40% of the time) together in the last 5-11 years. And I see a high probability for this to happen next month.