Depending on what news source you listen to somewhere between 6 and 8 thousand flights cancelled to accommodate Stella.
Assume 7,000 divide by 2 then take the sq root and divide that by 3 should give you the correct number of cancellations but delays are probably significant as always in the NE Hubs.
As to the Blizzard Conditions, not sure how you can have much of a blizzard with temperatures above freezing. I will check with Dairy Queen on that one.