Extremely High Risk for Tornadoes in the south. Blizzard conditions in Texas (again!!!). Orange sky with severe dust storm in China! Chicago snow?? (Southern portions have dynamic cooling potential later tomorrow?!) 60 or 70° Sunday and NWS calls it quits for Chicago this weekend because they are too busy. Weird!!

This podcast discusses the next strong moisture rich storm system that will be affecting the Midwest. It also discusses the areas that will be affected by a severe weather outbreak on Wednesday. The climatology for yesterday in regards to Chicago and some of the United States is discussed along with sunrise and sunset information.

There are 3 possible cooling mechanisms (that are currently known to me) available in the upper atmosphere to produce cold air through water/snow and 1 mechanism through air pressure. When cold air is produced from rapidly dropping pressure and precipitation melting it is called dynamic cooling. In addition to the cooling mechanism of melting, there is also evaporative cooling. Evaporative cooling is a significantly more efficient cooling mechanism than melting (the most significant is sublimation, the process of snow evaporating). Despite it's efficiency I have not seen this variable included in the concept of dynamic cooling. In this podcast I mistakenly included evaporative cooling as part of the dynamic cooling process, but it doesn't seem like it is. Also in this podcast it is implied that the process of snow turning into a gas is also called evaporation, but in reality it is called sublimation. The discussion in this podcast revolves primarily around evaporative cooling (and a little bit of sublimation). Currently I don't believe that this is part of dynamic cooling (I have no idea why it isn't) and therefore whenever the words dynamic cooling are said it should be replaced with evaporative cooling.

Given by a knowledgeable non-expert