Jet stream maps
Jet streams are rivers of air that separate northern and southern air masses. Weather systems and fronts do the same, but the jet stream does the same thing without a lot of the complexity of surface fronts. A common level of the atmosphere to look at the jet stream is 500 millibars, the point half way through the atmosphere.
Here’s the 500 mb map for March 20, the day Paula decided to come home until spring arrived in North Carolina.
Here it is for the day Paula went back to the south.