Problem
Why do most cold waves in North America occur shortly after the passage of a mid-latitude cyclone? The intense snowfall from a winter cyclone will cause the air to become super-chilled The downslope flow from the cyclone will pull the air down from the stratosphere and cause the air to cool super-adiabatically. The winds from the cyclone give the impression of extremely cold air due to the wind chill The counter-clockwise rotation around the low acts as a steering mechanism to draw the cold air from the polar regions into the mid-latitudes