#2318 Postby TheProfessor » Mon Feb 03, 2020 2:18 pm
The most important thing for DFW to watch for is going to be the intensity of precipitation. You can override a warm nose if you have enough snow melting too cool the column below freezing. The larger the warm nose the more snow you need, but if you have a small to medium warm nose and you get some high precipitation rates you can cool it enough for the snow to fall. This is due to the absorption of latent heat, which I talked about before. Same thing can and does happen at the surface when you have temps just above freezing and snow falling. When the snow melts at the surface and on the ground it absorbs latent heat cooling the surface. This is what DFW should watch for. At this point you don't even really need a southeast shift(though that would be great if it occurs). But if the models are under doing the cold and precipitation intensity then that opens up a whole new can of worms.
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An alumnus of The Ohio State University.
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