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Now, an interesting note, so the cold front that was associated with the entire system that produced these tornadoes, that was also part of a system that was further north that brought a ton of lake effect snow from about the 26th through the 29th. And a number of areas were hit, of course what happens with lake effect snow is you have the Great Lakes at this time of the year are still very very warm, temperatures are anywhere. Some of the lake temperatures I saw in small areas were still like around 12 degrees Celsius. That's up around 48 Fahrenheit I want to say. I might be wrong. I'm trying to do that in my head. So they're still warm, right? The point is the water is still very very warm and what we look at with lake effect snow is what you call the Delta T. This is the difference in temperature between the surface of the water and 850 millibars which is approximately 1.5 kilometers above the ground or let's say like you know an eighth of a mile something like that and the greater that greater the temperature differential the the more moisture you're gonna try and pull out of the air there are other factors you have to look at the depth of the instability and the direction of the winds. Are the winds lined up or are they sort of not lined up? If they're not lined up then the clouds will get torn apart because the winds are going in different directions at different altitudes but in this case the winds were really well lined up. The unstable air was very very deep and the Delta T so the temperature difference was in some cases like 20 degrees Celsius or greater, so huge temperature differentials. So you put all that together, and you have lake effect snow that forms and develops. And then in this case, the wind was utilizing some good fetch distances. Fetch is basically the longest stretch of open water you can get over the lake. So the fetch is, a good way to explain it would be the longer the fetch, the more moisture of a cloud is going to pull up off the water. It's basically the length of open water that you have. Longer fetch, more lake effect snow. Shorter fetch, less lake effect snow. Let me drop it.

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