From October 30 – 31, this low-pressure system slowly became better organized over Texas, before it ejected north over the Mississippi River Valley. This meridional trajectory of a low pressure track (almost due north from the western Gulf) is climatologically favorable to produce very heavy snowfall in the winter months because it allows copious amounts of moisture to flow north where it can interact with colder air. Cooler readings lingered at the very end of October across the Upper Midwest, and a re-enforcing pool of Arctic air was just beginning to push southeast through the western Canadian Provinces.